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Shield Immunity Shot
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A healthy immune system is the best defense we have against
bacteria,
viruses
fungi
parasites
toxins
that destroy our health
What makes Shield so effective?
We don't rely on just one ingredient
We combine nature's most powerful herbs with the following attributes
Antiviral
Antibacterial
Anti-fungal
Anti-parasitic
Antioxidants
Immune Modulating
| Shield | ||
| Vitamin C - Our body uses antioxidants to boost the immune system. Vitamin C is one of the most important antioxidants. | | |
| Zinc - Zinc possesses antiviral properties that inhibit the viral process from attachment, infection and replication. Zinc cannot enter a cell on its own. Zinc can penetrate a cell through a process called ionophore that is facilitated by Quercetin and or EGCG (Green Tea Extract). We use both Quercetin and EGCG to maximize cell absorption of zinc. | | |
| Green Tea Extract (EGCG) - A powerful antioxidant and ionophore. Ionophore helps transport zinc ions into cells where viruses replicate. | | |
| Quercetin - A powerful antioxidant, anti-inflammatory and ionophore. Ionophore helps transport zinc ions into cells where viruses replicate. | | |
| Astaxanthin - Claimed to be 6,000x stronger than Vitamin C. A potent antioxidant carotenoid that plays a major role in modulating the immune response. Increases the numbers and activity of white blood cells called lymphocytes and natural killer cells that are responsible for creating the body's innate immune response to invaders. | | |
| Beta Glucan 1,3/1,6 - Beta Glucan's are a immunostimulant agent that stimulate the activity of macrophages and NK cell cytotoxicity. Macrophages ingest and demolish invading pathogens and stimulate other immune cells to attack. Beta glucans stimulate lethal white blood cells (lymphocytes) that bind to tumors or viruses, and release chemicals to destroy them. | | |
| Andrographis: Has powerful antibacterial, antioxidant, anti-inflammatory, anticancer, and immunostimulating properties. | | |
| Astragalus - Antioxidant, immune support and stress reduction. | | |
| Elderberry - Antioxidant used for centuries as a remedy for immune support. | | |
| Echinacea - Has been traditionally used for centuries as a holistic way to support the immune system and help the body fight infections. Echinacea is one of the world's leading herb used for overall wellness. | | |
| American Ginseng - Possesses active immune modulation potential against cancer, bacterial, viral infections and autoimmune diseases. | | |
| Eleuthero - Adaptogen, anticholesteremic, antioxidant, anti-inflammatory, immune potentiator, nervine. anti-inflammatory, reduces cortisol levels and promotes improved cognitive and physical performance. | | |
| Mistletoe - Possesses semiparasitic, anti-anxiety, and immune boosting properties. | | |
| Sardinian cistus incanus - A natural antibiotic, antiviral, biofilm buster with potent immune modulator. | | |
| Codonopsis Root - Adaptogen, gastroprotective, hypoglycemic agent, immune potentiator, nervine that is commonly used to strengthen the immune system. | | |
| Licorice Root - Adaptogen, antihistamine, anti-inflammatory, antidiuretic, antioxidant, antitussive, antiviral, demulcent, hepatoprotective, immune amphoteric, gastroprotective and immune amphoteric. | | |
| Maral - Adaptogen, anticoagulant, antioxidant, antitumor, cardiac tonic, hepatoprotective, hypoglycemic, immunostimulant, and nervine. | | |
| Rhodiola - Stimulating adaptogen, anti-inflammatory, antioxidant, antidepressant, cardioprotective, immune potentiator, and nervine. | | |
| Schisandra - Adaptogen, antioxidant, anti-inflammatory, astringent, antiasthmatic, hepatoprotective, immune amphoteric. | |
Please go to the Ingredients tab below for independent third party reports on efficacy of the ingredients
We use proprietary liposomal encapsulation technology with organic sunflower lecithin for maximum oral absorption delivering the active ingredients into your bloodstream. Having the best ingredients are worthless unless you absorb them into your bloodstream so they can circulate.
We take it a step further by using ionophore technology to allow the zinc ions to penetrate the cells and prevent viral replication. Without this technology, you cannot reach viruses replicating inside cells.
High Dosage Vitamin C - Vitamin C is an antioxidant, helps prevent oxidative stress and provide immune support. Vitamin C is required to produce collagen which plays a vital role in wound healing. Mega dosages have been studied as a treatment for patients with cancer since the 1970s. Intravenous vitamin C was the only viable delivery mechanism for dosages above 1 gram/day because the absorption rates were so low causing gastric distress.
To kill cancer cells, a vitamin C blood level concentration of around 250-350 mg/dl is required. An average person will typically have around 1 mg/dl on a healthy diet. It takes 1.5 hours for a vitamin C IV to deliver 25-50 grams of vitamin C raising the blood level concentration to the 200-300 mg/dl range.
Standard Vitamin C pills or powders are absorbed at approximately 17- 20%. Absorption rates decrease as you take more than 1 gram usually resulting in diarrhea. Shield and Shield RX are absorbed at 93% measured in the blood stream. A 390% increase in absorption! Taking high dosages of Shield or Shield RX do not result in diarrhea because there is very little unabsorbed Vitamin C left in the digestive tract to cause diarrhea.
6 grams of liposomal Vitamin C contained in Shield is equal to 50 grams of intravenous vitamin C.
This is a bit confusing since blood level concentrations are the gold standard. Having proper blood levels is the start. We focus on the final destination of Vitamin C levels inside the cells. Vitamin C is a water soluble nutrient that has a difficult time passing through the fat barrier that coats cell walls. At immunizeLABS, our products are made out of the same fat-based bi-layer that the cell walls are made of making if more efficient for the vitamin C to cross the cellular walls.
Reviews
Ingredients
All our ingredients are of the highest quality and organic where possible
Each ingredient has references on efficacy below
Andrographis Paniculata Extract - Used in traditional medicine to treat infectious diseases and fevers. Andrographis exhibits antibacterial, antioxidant, anti-inflammatory, anticancer, and immunostimulating properties. Also helps heal lesions.
+ Thailand Approves Asian Herb Andrographis to Treat COVID-19.pdf
+ Andrographis Paniculata (Chuan Xin Lian).pdf
+ Andrographis paniculata, the Key Facts for Therapeutic Use Stephen Behr, Ph.D.pdf
+ Andrographolide as a potential inhibitor of SARS-CoV-2 main protease: an in silico approach.pdf
+ Andrographolide, a New Hope in the Prevention and Treatment of Metabolic Syndrome.pdf
Astaxanthin Extract - Astaxanthin modulates immune response, inhibits cancer cell growth, reduces bacterial load and gastric inflammation, and protects against UVA-induced oxidative stress. Astaxanthin is 6,000x stronger than vitamin C!
+ Astaxanthin decreased oxidative stress and inflammation and enhanced immune response in humans.pdf
+ Vitamin C vs Astaxanthin…..Which is 6000 times stronger than the other.pdf
+ Astaxanthin, COVID‐19 and immune response Focus on oxidative stress, apoptosis and autophagy.pdf
Astragalus Extract - The most interesting health benefits of astragalus include its ability to protect heart health, alleviate allergies, prevent certain types of cancer, boost energy levels, lower stress, strengthen the immune system, slow the aging process, and prevent chronic illnesses.
+ Astragalus It Stops Aging, Cancer, And More! – Health Kismet Blog.pdf
+ A Natural Product Telomerase Activator As Part of a Health Maintenance Program.pdf
+ The Incredible Benefits of Astragalus Root Herb of Longevity.pdf
+ Immune System Effects of Echinace Ginseng, and Astragalus A Review.pdf
Beta Glucan 1,3/1,6 (from yeast) Extract - Scientifically proven biological defense modifier that nutritionally potentiates, modulates and helps normalize the immune response. Beta Glucan activates macrophage immune cells, NK-Cells, T-Cells, B-Cells and selected cytokines.
+ The Immune Benefits of Beta Glucans.pdf
+ Dietary modulation of immune function by B-glucans.pdf
+ Cholesterol-Lowering Effect of Beta Glucan Extracted from Saccharomyces cerevisiae in Rats.pdf
+ Beta Glucan: Health Benefits in Obesity and Metabolic Syndrome.pdf
Echinacea Augustifolia Extract - Helps boost the immune system and fight infections. People use echinacea to shorten the duration of the common cold and flu, and reduce symptoms.
Elderberry Extract - Activates the immune system by increasing inflammatory cytokine production. Has antiviral properties that help fight different strains of influenza virus.
+ COVID-19 - Structural basis for the recognition of SARS-CoV-2 by full-length human ACE2.pdf
+ Elderberry for prevention and treatment of.pdf
+ The ABC Clinical Guide to Elder Berry.pdf
+ Elderberry for prevention and treatment of viral respiratory illnesses a systematic review.pdf
Green Tea Extract (epigallocatechin gallate, or EGCG) Extract - Green tea contains a unique polyphenol known as EGCG, that is a powerful zinc ionophore (helps zinc get into cells). There is a dual benefit as zinc helps to make EGCG more bioavailable.
+ Zinc and COVID-19 What malaria drugs can teach us.pdf
+ Lazu updates zinc ionophore patent to improve efficiency.pdf
Quercetin Extract - Has antioxidant, anti-inflammatory and ionophore properties. Quercetin has been used to reduce swelling, kill cancer cells, control blood sugar, and help prevent heart disease. Quercetin can also help stabilize the cells that release histamine in the body and thereby have an anti-inflammatory and antihistamine effect. The ionophore property helps zinc get into cells.
+ Potential interventions for SARS-CoV-2 infections Zinc showing promise.pdf
+ Evaluation of the Effect of Zinc, Quercetin, Bromelain and Vitamin C on COVID-19 Patients.pdf
+ 20-Week Study of Clinical Outcomes of Over-the-Counter COVID-19 Prophylaxis and Treatment.pdf
+ Quercetin Antiviral Significance and Possible COVID-19 Integrative Considerations.pdf
+ Zinc and COVID-19 Basis of Current Clinical Trials.pdf
+ Antiviral Effects of Quercetin through Zinc Ionophore Activity.pdf
Zinc Gluconate - Zinc is an essential trace element that is crucial for growth, development, and the maintenance of a healthy immune system. Zinc levels are a critical factor that can influence antiviral immunity. Zinc deficiency is associated with severe infections. Zinc helps to enhance the response to the virus and participates in many regulatory pathways. Zinc supports the production of white blood cells, which are the major players in the immune system. Zinc also helps regulate inflammation. An inflammatory response is required to help fight an infection but unfortunately in COVID-19, the overproduction of pro-inflammatory cytokines can result in some of the worst symptoms of COVID-19. The third benefit to zinc is that zinc helps prevent the replication of rhinoviruses responsible for respiratory infections including the common cold. Once inside the cell, zinc inhibits the replication capacity of COVID-19 virus. Zinc cannot enter a cell on its own. Zinc can penetrate a cell through a process called ionophore that is facilitated by Quercetin and or EGCG (Green Tea Extract). We use both Quercetin and EGCG to maximize cell absorption of zinc.
+ Zinc and COVID-19 What malaria drugs can teach us.pdf
+ Lazu updates zinc ionophore patent to improve efficiency.pdf
+ Zinc and COVID-19 Basis of Current Clinical Trials.pdf
+ Antiviral Effects of Quercetin through Zinc Ionophore Activity.pdf
+ EFFECTS OF HERBAL SUPPLEMENTS ON THE IMMUNE SYSTEM IN RELATION TO EXERCISE.pdf
Vitamin C (Sodium Ascorbate) - One of the most effective and safest nutrients that supports the immune system. Beneficial in prevention and treatment of scurvy, common cold, lead toxicity, cancer, lowering hypertension, curing cataracts, combating stroke, maintaining the elasticity of skin, healing wounds, and controlling the symptoms of asthma.
+ COVID-19 - Herbal Medicines and Cytokine Storm in respiratory infection.pdf
+ COVID-19 Hospital based Intravenous Vitamin C Treatment.pdf
+ COVID-19 - Landmark Publication on Vitamin C for COVID-19.pdf
+ COVID-19 - Treatment for severe acute respiratory distress syndrome from COVID-19.pdf
+ COVID-19 Coronavirus Patients in China to be Treated with High Dose Vitamin C.pdf
+ COVID-19 Disinformation Campaign Exposed.pdf
+ COVID-19 had us all fooled but now we might have finally found its secret.pdf
+ COVID-19 News Media Attacks Vitamin C Treatment of COVID-19 Coronavirus.pdf
+ COVID-19 Nutritional Treatment of Coronavirus.pdf
+ COVID-19 Shanghai Government Officially Recommens Vitamin C for COVID-19.pdf
+ COVID-19 Stop ARDS Now with ASCORBIC ACID.pdf
+ COVID-19 Three Intravenous Vitamin C Research Studies Approved for Treating COVID-19.pdf
+ COVID-19 VITAMIN C AND ITS APPLICATION TO THE TREATMENT OF nCoV CORONAVIRUS.pdf
+ COVID-19 Vitamin C Protects Against Coronavirus.pdf
+ FLU - The use of herbal extracts in the control of influenz.pdf
+ The Science of Vitamin C Research on Optimizing Blood and Cellular Levels.pdf
+ SHINGLES - Health Impact News Vitamin C More Effective than Vaccines for Shingles.pdf
+ High-Dose Vitamin C (PDQ®)–Patient Version.pdf
+ Articles proving Vitamin C cures infections.pdf
+ Boost Your Vitamin C For Optimal Immunity.pdf
+ Cancer - Beta Glucan Benefits, Uses, Dosage, Side Effects Cancer Tutor.pdf
+ CANCER - Cancer Treatment — IV Ascorbic Acid.pdf
+ CANCER - High-dose vitamin C injections shown to annihilate cancer.pdf
+ CANCER - Treat cancer with IV vitamin C - Recent clinical success.pdf
+ CANCER - Vitamin C 'gives chemotherapy a boost' - BBC News.pdf
+ CANCER - Vitamin C injections ease ovarian-cancer treatment.pdf
+ CANCER - Intravenous Vitamin C May Boost Chemo's Cancer-Fighting Power – WebMD.pdf
+ Effect of high dose vitamin C on Epstein-Barr viral infection.pdf
+ What Happens If You Take Vitamin C with Antibiotics Med-Health.net.pdf
+ Vitamin C pharmacokinetics in healthy volunteers Evidence for a recommended dietary allowance.pdf
+ Vitamin C and antibiotics A new one-two 'punch' for knocking-out cancer stem cells.pdf
+ The Use of Vitamin C as an Antibiotic.pdf
+ The Clinical Impact of Vitamin C My Personal Experiences as a Physician - Riordan Clinic.pdf
+ Reversing Heart Disease with a vitamin.pdf
+ Pharmacokinetics of oral vitamin C.pdf
+ Lyme Disease - Wiped Out By Vitamin C.pdf
+ PARKINSON'S - Parkinson's Disease Is Victory in Sight .pdf
+ Health Impact News Vitamin C Saves Man Dying of Viral Pneumonia.pdf
+ Immune enhancing role of vitamin C and zinc and effect on Clinical Conditions.pdf
Directions
Take first thing in the morning with water.
Place 1 tablespoon of water in a shot glass. Use very little water, just enough to wet the bottom of the glass.
Add 1 teaspoon of Shield into the glass. Swirl and swallow quickly. Do not mix with spoon.
Wait 10 minutes before eating of drinking anything else.
| | Store in a cool, dry place away from sunlight. No need to refrigerate. |
| | The best times to take the supplement is first thing in the morning or right after a workout with water always on an empty stomach. |
| | You can combine Shield or Shield RX with PainRelief and Boost. You can take as often as required.
|
| | Always wait 10 minutes before eating or drinking to allow the product to fully absorb. Eating or drinking too early after will kick off the digestion process and halt the absorption process.
|
Q&A Ask a Question Here
FAQ
Immune System Boosting FAQ
What does Vitamin C do?
Vitamin C (ascorbic acid) is a powerhouse antioxidant that strengthens your immune system by protecting cells from oxidative stress caused by free radicals. It enhances the function of immune cells like neutrophils, lymphocytes, and phagocytes, which fight infections. Vitamin C also supports epithelial barriers (e.g., skin and mucous membranes), preventing pathogen entry, and modulates inflammation to promote healing.
References: Healthline - Vitamin C Benefits, National Institutes of Health - Vitamin C Fact Sheet, PubMed - Vitamin C and Immune Function
What is Vitamin C food for?
Vitamin C in food supports immune health, collagen production for skin and tissue repair, and antioxidant defense against environmental damage. It’s found in citrus fruits (oranges, lemons), bell peppers, strawberries, kiwi, and broccoli, making it an essential nutrient for preventing colds and supporting overall wellness.
References: Medical News Today - Vitamin C Foods, Harvard Health - Vitamin C Benefits, PubMed - Dietary Vitamin C
How much Vitamin C is too much?
The upper limit (UL) for Vitamin C is 2,000 mg per day for adults. Exceeding this may cause side effects like diarrhea, nausea, or kidney stones due to excess oxalate production. For immune support, moderation is key—stick to recommended doses unless advised by a doctor.
References: National Institutes of Health - Vitamin C Fact Sheet, Mayo Clinic - Vitamin C Overdose, PubMed - Vitamin C Toxicity
How much Vitamin C should I take daily for immune support?
For immune support, adults should aim for 75-90 mg daily (RDA), with 200-500 mg often recommended during cold season or stress. Studies suggest 1-2 g/day can reduce cold severity, but consult a healthcare provider for personalized dosing.
References: Healthline - Vitamin C Dosage, National Institutes of Health - Vitamin C RDA, PubMed - Vitamin C and Colds
Can Vitamin C shorten the duration of a cold?
Yes, Vitamin C can shorten cold duration by about 8% in adults and 14% in children, according to meta-analyses. Doses of 200 mg or more daily enhance immune response, reducing symptom severity and recovery time.
References: Cochrane - Vitamin C for Colds, PubMed - Vitamin C Meta-Analysis, Healthline - Vitamin C and Colds
Is zinc glycinate better than other forms for immunity?
Zinc glycinate may be superior due to its high bioavailability—its chelated form (bound to glycine) enhances absorption compared to zinc oxide or sulfate. This supports immune cell function more effectively, making it a top choice for cold prevention.
References: Healthline - Zinc Supplements, PubMed - Zinc Bioavailability, Medical News Today - Zinc Forms
How does zinc glycinate help fight cold and flu symptoms?
Zinc glycinate inhibits viral replication (e.g., rhinoviruses) in the upper respiratory tract, reduces inflammation, and boosts T-cell and natural killer cell activity. Studies show it can shorten cold duration by 33% when taken within 24 hours of symptoms.
References: PubMed - Zinc and Colds, Healthline - Zinc Benefits, National Institutes of Health - Zinc Fact Sheet
Can you take zinc glycinate daily to prevent getting sick?
Yes, 10-15 mg daily is safe for most adults (RDA: 8-11 mg), supporting immune function without toxicity. Avoid exceeding 40 mg/day long-term to prevent copper imbalance or nausea.
References: National Institutes of Health - Zinc RDA, Healthline - Zinc Dosage, PubMed - Zinc Safety
What is quercetin?
Quercetin is a flavonoid antioxidant found in onions, apples, and berries. It’s known for its anti-inflammatory, antiviral, and immune-modulating properties, making it a natural ally against colds and flu.
References: Healthline - Quercetin Benefits, PubMed - Quercetin Overview, Medical News Today - Quercetin
Does quercetin help boost the immune system against viruses?
Yes, quercetin inhibits viral entry and replication (e.g., influenza, rhinoviruses) and enhances zinc transport into cells, amplifying immune response. Studies suggest it supports T-cell function and reduces viral load.
References: PubMed - Quercetin Antiviral Effects, Frontiers - Quercetin and Immunity, Healthline - Quercetin and Viruses
Can quercetin reduce the severity of flu symptoms?
Quercetin may reduce flu symptom severity by lowering inflammation and oxidative stress. Animal studies show it mitigates lung damage from influenza, though human trials are ongoing.
References: PubMed - Quercetin and Flu, Medical News Today - Quercetin Benefits, Frontiers - Quercetin Anti-Inflammatory
Is it safe to take quercetin daily for cold prevention?
Yes, 500-1,000 mg daily is generally safe for short-term use (up to 12 weeks). Long-term safety lacks extensive data—consult a doctor if taking with medications (e.g., blood thinners).
References: Healthline - Quercetin Dosage, PubMed - Quercetin Safety, WebMD - Quercetin
Does green tea extract support the immune system?
Yes, green tea extract, rich in polyphenols like EGCG (epigallocatechin gallate), supports immunity by enhancing antioxidant defenses, reducing inflammation, and boosting immune cell activity against pathogens.
References: Healthline - Green Tea Benefits, PubMed - Green Tea and Immunity, Medical News Today - Green Tea
What does green tea extract do?
Green tea extract fights infections with its antiviral and antibacterial properties, protects cells from oxidative damage, and may improve metabolic health—all key for a robust immune system.
References: PubMed - Green Tea Effects, Healthline - Green Tea Extract, WebMD - Green Tea
How effective is EGCG from green tea in fighting infections?
EGCG inhibits viral replication (e.g., influenza, herpes) and enhances immune cell function in lab studies. Human evidence is promising but limited—500-700 mg daily may offer benefits.
References: PubMed - EGCG Antiviral, Frontiers - EGCG and Immunity, Healthline - EGCG Benefits
Can drinking green tea or EGCG supplements help prevent colds?
Drinking 2-3 cups daily or taking 200-500 mg EGCG supplements may reduce cold risk by boosting immunity and fighting viruses, though conclusive human studies are needed.
References: Medical News Today - Green Tea and Colds, PubMed - Green Tea Prevention, Healthline - Green Tea Benefits
What is astaxanthin good for?
Astaxanthin, a carotenoid from microalgae and seafood (e.g., salmon), is a potent antioxidant that supports immunity, reduces inflammation, and protects against respiratory infections—ideal for flu season.
References: Healthline - Astaxanthin Benefits, PubMed - Astaxanthin Overview, WebMD - Astaxanthin
Can astaxanthin improve immune response during flu season?
Yes, astaxanthin enhances lymphocyte and phagocyte activity, reducing flu-related inflammation in animal studies. Human trials suggest 4-8 mg daily boosts immunity.
References: PubMed - Astaxanthin Immunity, Frontiers - Astaxanthin Effects, Healthline - Astaxanthin and Flu
Is astaxanthin effective for respiratory virus protection?
Astaxanthin’s anti-inflammatory and antioxidant effects may protect lung tissue from respiratory viruses, though direct human evidence is limited—4-12 mg daily is a typical dose.
References: PubMed - Astaxanthin Respiratory, Medical News Today - Astaxanthin, WebMD - Astaxanthin Benefits
How does astaxanthin compare to Vitamin C for immunity?
Astaxanthin’s antioxidant power is 6,000 times stronger than Vitamin C, targeting inflammation and cellular protection, while Vitamin C directly enhances immune cell function. Both are complementary for immunity.
References: Healthline - Astaxanthin vs. Vitamin C, PubMed - Antioxidant Comparison, Frontiers - Astaxanthin Potency
How long does it take for beta-glucan to work?
Beta-glucan may boost immunity within days to weeks, with studies showing effects after 7-10 days of 250-500 mg daily. Full benefits for cold prevention may take 2-4 weeks.
References: PubMed - Beta-Glucan Timing, Healthline - Beta-Glucan Benefits, Medical News Today - Beta-Glucan
Do beta-glucans help prevent colds and flu?
Yes, beta-glucans (from yeast, oats, or mushrooms) activate macrophages and NK cells, reducing cold and flu incidence by up to 25% in trials with 250-500 mg daily.
References: PubMed - Beta-Glucan and Colds, Frontiers - Beta-Glucan Immunity, Healthline - Beta-Glucan Effects
What is the best dosage of beta-glucan for immune support?
250-500 mg daily of beta-glucan (1,3/1,6 form) is optimal for immune support, based on clinical studies. Higher doses (up to 900 mg) may offer added benefits without toxicity.
References: PubMed - Beta-Glucan Dosage, Medical News Today - Beta-Glucan Dosage, Healthline - Beta-Glucan Guide
Is beta-glucan 1,3/1,6 effective in reducing sick days?
Yes, beta-glucan 1,3/1,6 (from yeast) reduces sick days by 10-25% in studies, enhancing immune response and shortening respiratory infection duration.
References: PubMed - Beta-Glucan 1,3/1,6, Frontiers - Beta-Glucan Efficacy, Healthline - Beta-Glucan Benefits
What is Andrographis?
Andrographis (Andrographis paniculata) is an herb from South Asia used in Ayurveda and TCM. Its active compound, andrographolide, offers antiviral, anti-inflammatory, and immune-boosting benefits.
References: Healthline - Andrographis Benefits, PubMed - Andrographis Overview, WebMD - Andrographis
Can Andrographis prevent or reduce flu symptoms?
Yes, Andrographis reduces flu symptom severity and duration by up to 50% when taken at 200-400 mg daily within 48 hours of onset, thanks to its antiviral properties.
References: PubMed - Andrographis and Flu, Cochrane - Andrographis for Colds, Healthline - Andrographis Effects
How does Andrographis support immune function?
Andrographis enhances cytokine production, stimulates T-cells and NK cells, and inhibits viral replication, making it a natural immune booster for respiratory infections.
References: PubMed - Andrographis Immunity, Frontiers - Andrographis Mechanisms, WebMD - Andrographis Benefits
Is Andrographis a natural remedy for respiratory infections?
Yes, Andrographis is a proven remedy for colds and flu, reducing symptoms like cough and fever in clinical trials—200-400 mg daily is effective.
References: PubMed - Andrographis Respiratory, Healthline - Andrographis Uses, Cochrane - Andrographis Evidence
Does astragalus boost the immune system against colds?
Yes, astragalus (Astragalus membranaceus) enhances white blood cell production and antibody levels, strengthening immunity against colds in TCM and modern studies.
References: Healthline - Astragalus Benefits, PubMed - Astragalus Immunity, WebMD - Astragalus
How effective is astragalus in flu prevention?
Astragalus may reduce flu risk by boosting NK cell activity and interferon production—studies show 1-2 g daily of root extract offers protective effects.
References: PubMed - Astragalus and Flu, Frontiers - Astragalus Effects, Healthline - Astragalus Uses
Can I take astragalus daily for immune support?
Yes, 1-2 g daily (root powder or extract) is safe for most adults for immune support. Avoid long-term high doses if immunocompromised—consult a doctor.
References: Healthline - Astragalus Dosage, PubMed - Astragalus Safety, WebMD - Astragalus Safety
What are the health benefits of astragalus?
Astragalus boosts immunity, reduces inflammation, supports heart health, and may enhance energy—ideal for natural cold and flu defense.
References: Healthline - Astragalus Benefits, PubMed - Astragalus Overview, Medical News Today - Astragalus
What is elderberry good for?
Elderberry (Sambucus nigra) fights colds, flu, and oxidative stress with its high antioxidant content (anthocyanins), supporting immune health and reducing inflammation.
References: Healthline - Elderberry Benefits, PubMed - Elderberry Uses, WebMD - Elderberry
What is elderberry?
Elderberry is a dark purple berry from the Sambucus tree, used in traditional medicine for its antiviral and immune-boosting properties—rich in Vitamin C and flavonoids.
References: Medical News Today - Elderberry, PubMed - Elderberry Overview, Healthline - Elderberry Guide
What are elderberry benefits?
Elderberry shortens cold duration, reduces flu symptoms, boosts immunity, and offers antioxidant protection—perfect for seasonal wellness.
References: Healthline - Elderberry Benefits, PubMed - Elderberry Evidence, WebMD - Elderberry Benefits
Does elderberry reduce cold and flu duration?
Yes, elderberry cuts cold duration by 2-4 days and flu symptoms by 50% in trials—400-1,000 mg daily (extract) is effective.
References: PubMed - Elderberry and Colds, Cochrane - Elderberry Efficacy, Healthline - Elderberry Effects
Can elderberry prevent viral infections like the flu?
Elderberry may prevent flu by inhibiting viral entry and replication—studies suggest 600-1,200 mg daily boosts resistance.
References: PubMed - Elderberry Antiviral, Frontiers - Elderberry Prevention, Healthline - Elderberry Prevention
How often should you take elderberry for immune health?
Take 300-600 mg daily (extract) for prevention, or 1,000 mg during illness—consistent use maximizes immune benefits.
References: Healthline - Elderberry Dosage, PubMed - Elderberry Use, WebMD - Elderberry Guide
Can codonopsis strengthen the immune system during winter?
Codonopsis (Codonopsis pilosula) enhances immunity by boosting white blood cell activity and energy—used in TCM to fortify against winter colds.
References: PubMed - Codonopsis Immunity, Healthline - Codonopsis Benefits, WebMD - Codonopsis
Is codonopsis used to prevent respiratory infections?
Yes, codonopsis supports lung health and immune response in TCM, potentially reducing respiratory infection risk—500-1,000 mg daily is common.
References: PubMed - Codonopsis Respiratory, Medical News Today - Codonopsis, Healthline - Codonopsis Uses
How does codonopsis root compare to ginseng for colds?
Codonopsis is milder than ginseng, focusing on immune and energy support without overstimulation—both aid colds, but codonopsis is gentler.
References: PubMed - Codonopsis vs. Ginseng, Healthline - Codonopsis Comparison, WebMD - Ginseng
Does licorice root help with flu symptoms?
Licorice root (Glycyrrhiza glabra) reduces flu symptoms like cough and inflammation due to glycyrrhizin’s antiviral and soothing effects—50-100 mg daily is typical.
References: PubMed - Licorice and Flu, Healthline - Licorice Benefits, WebMD - Licorice
Can licorice root fight viral infections?
Yes, glycyrrhizin inhibits viral replication (e.g., influenza, SARS) in lab studies, supporting its use as a natural antiviral—human evidence is emerging.
References: PubMed - Licorice Antiviral, Frontiers - Licorice Effects, Healthline - Licorice Uses
Is licorice root safe for long-term immune boosting?
No, long-term use (>4-6 weeks) of high doses (>100 mg glycyrrhizin daily) may cause hypertension or potassium loss—use intermittently.
References: Healthline - Licorice Safety, PubMed - Licorice Safety, WebMD - Licorice Risks
What are licorice root benefits?
Licorice boosts immunity, soothes throats, fights viruses, and reduces inflammation—ideal for respiratory health.
References: Healthline - Licorice Benefits, PubMed - Licorice Overview, Medical News Today - Licorice
What are licorice root tea benefits?
Licorice tea supports immunity, eases coughs, and promotes digestion—a natural cold remedy when sipped 1-2 times daily.
References: Healthline - Licorice Tea, PubMed - Licorice Effects, WebMD - Licorice Tea
What is licorice root extract?
Licorice extract concentrates glycyrrhizin for potent antiviral and immune support—use 50-100 mg daily for colds.
References: PubMed - Licorice Extract, Healthline - Licorice Uses, WebMD - Licorice
What are rhodiola benefits?
Rhodiola (Rhodiola rosea) reduces stress, boosts immunity, enhances energy, and may protect against colds—an adaptogen for overall wellness.
References: Healthline - Rhodiola Benefits, PubMed - Rhodiola Overview, WebMD - Rhodiola
What is a rhodiola rosea supplement?
Rhodiola supplements (200-400 mg daily) support immune function under stress, reducing cold susceptibility—standardized to 3% rosavins is best.
References: Healthline - Rhodiola Dosage, PubMed - Rhodiola Effects, WebMD - Rhodiola Guide
Can rhodiola improve immune resilience to colds?
Yes, rhodiola’s adaptogenic properties reduce stress hormones (cortisol), enhancing immune cell function and cold resistance—200-400 mg daily helps.
References: PubMed - Rhodiola Immunity, Frontiers - Rhodiola Stress, Healthline - Rhodiola Benefits
Does rhodiola reduce the impact of seasonal flu?
Rhodiola may lessen flu impact by supporting immunity and reducing fatigue—studies suggest 200-600 mg daily aids recovery.
References: PubMed - Rhodiola and Flu, Healthline - Rhodiola Uses, WebMD - Rhodiola Effects
Is rhodiola good for immune support under stress?
Yes, rhodiola balances immune function during stress, preventing suppression—200-400 mg daily is effective.
References: PubMed - Rhodiola Stress, Frontiers - Rhodiola Immunity, Healthline - Rhodiola Guide
What are schisandra benefits?
Schisandra (Schisandra chinensis) boosts immunity, fights infections, reduces stress, and supports liver health—a TCM staple for seasonal wellness.
References: Healthline - Schisandra Benefits, PubMed - Schisandra Overview, WebMD - Schisandra
What is schisandra berry?
Schisandra berries, rich in lignans, enhance immunity and energy—used traditionally to combat colds and fatigue (500-1,000 mg daily).
References: Healthline - Schisandra Berry, PubMed - Schisandra Effects, Medical News Today - Schisandra
How does schisandra help fight off colds and infections?
Schisandra boosts NK cell activity and antioxidant defenses, reducing cold severity—500-1,000 mg daily supports this effect.
References: PubMed - Schisandra Immunity, Frontiers - Schisandra Effects, Healthline - Schisandra Uses
Is schisandra good for immune system balance?
Yes, schisandra modulates immunity as an adaptogen, preventing over- or under-activity—ideal for balanced defense.
References: PubMed - Schisandra Balance, Healthline - Schisandra Benefits, WebMD - Schisandra Guide
Can schisandra protect against seasonal illnesses?
Schisandra may protect against colds and flu by enhancing immunity and reducing inflammation—500-1,000 mg daily is typical.
References: PubMed - Schisandra Protection, Frontiers - Schisandra Efficacy, Healthline - Schisandra Effects
What are eleuthero benefits?
Eleuthero (Eleutherococcus senticosus) boosts immunity, reduces stress, and enhances stamina—a Siberian ginseng alternative for cold prevention.
References: Healthline - Eleuthero Benefits, PubMed - Eleuthero Overview, WebMD - Eleuthero
Does eleuthero prevent flu and viral infections?
Eleuthero may prevent flu by enhancing NK cell and T-cell function—studies suggest 400-800 mg daily strengthens defenses.
References: PubMed - Eleuthero and Flu, Frontiers - Eleuthero Effects, Healthline - Eleuthero Uses
Can eleuthero support the immune system during stress?
Yes, eleuthero reduces cortisol, preserving immune function under stress—400-800 mg daily is effective.
References: PubMed - Eleuthero Stress, Healthline - Eleuthero Benefits, WebMD - Eleuthero Guide
What times of the year affect the immune system?
Winter weakens immunity due to low sunlight (less vitamin D), cold air, and more indoor contact. Seasonal transitions can also affect routines and health.
How do I know if my immune system is not working properly?
Signs include frequent infections, fatigue, digestive issues, slow wound healing, and inflammation. Medical tests may be needed for confirmation.
Are there foods that help strengthen the immune system?
Yes: citrus fruits (vitamin C), garlic, yogurt (probiotics), spinach, turmeric, ginger, and almonds (vitamin E) support immunity.
What is the difference between a cold and the flu?
Colds develop slowly and are milder; flu hits fast with high fever, fatigue, and body aches. Flu symptoms are more severe and systemic.
Can stress weaken your immune system?
Yes. Chronic stress raises cortisol, which suppresses immunity, reduces white blood cells, and increases infection risk.
Does age affect the immune system?
Yes. With age, T-cell production slows, chronic inflammation rises, and vaccine responses weaken.
Why do children get sick more often?
Their immune systems are still developing and lack exposure-based memory. Schools/daycares increase germ exposure.
Can your menstrual cycle affect immunity?
Yes. Immune activity varies: it’s stronger before ovulation (follicular phase) and slightly weaker after (luteal phase), increasing vulnerability.
What vitamins boost the immune system?
Vitamin C, D, E, A, B6, and B12 support various immune functions including antioxidant defense, T-cell activation, and antibody production.
How does sleep affect the immune system?
Sleep strengthens immunity by aiding T-cell activation and cytokine release. Poor sleep increases inflammation and illness risk.
What are signs of a weak immune system?
Frequent infections, fatigue, slow healing, cold sores, and digestive issues are common signs of immune dysfunction.
Is inflammation good or bad for immunity?
Acute inflammation helps fight infections. Chronic inflammation is harmful and linked to autoimmune and metabolic diseases.
How much water should I drink for immune health?
Aim for 2–3 liters daily. Water supports lymph flow, toxin removal, and cell hydration essential to immune function.
Can seasonal changes make you sick?
Yes. Dry air, lower sunlight, and more indoor contact during seasonal changes can compromise immunity and raise infection risk.
What are autoimmune disorders?
Autoimmune diseases cause the immune system to attack healthy tissue. Examples include lupus, type 1 diabetes, and RA.
How do vaccines strengthen immunity?
Vaccines expose the body to antigens to train immune memory. Later exposure triggers faster, stronger defense.
Can you really 'boost' your immune system?
YES! You can support it with good habits, but over-activating the immune system may backfire (autoimmunity/inflammation).
Why do I keep getting sick?
Causes include chronic stress, poor diet, sleep deprivation, immune conditions, or nutrient deficiencies. Consult a physician if persistent.
How does the immune system recognize pathogens?
Specialized receptors detect pathogen-associated molecules (PAMPs). This activates immune cells to neutralize the intruder.
WARNING: If you plan on purchasing Shield or Shield RX, make sure you are not taking immune depressing drugs such as:
This is only a partial list. Please check with your health care provider.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, prevent or cure disease or illness.
*Always consult with your healthcare professional before starting any supplementation program, before taking or stopping any medication, or if you have or suspect you might have any health problem.