Supplement |
Why |
3 Stars
Andrographis
48 to 60 mg andrographolides in two to three divided doses per day
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Andrographis supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
Double-blind trials have shown that common cold symptoms improve and recovery is faster when andrographis extract containing 48 to 60 mg andrographolides is taken in three or four divided doses daily, beginning as soon as possible after symptoms appear. In addition, preliminary research in Russia suggests andrographis extract may be effective for the treatment of influenza. This extract was also tested for preventing colds in a double-blind study of teenagers. After three months, the group taking 5 mg of andrographolides twice daily had only half the number of colds experienced by the placebo group.
Other preliminary and double-blind research has shown similar benefits for treating the common cold from a combination of andrographis extract and an eleuthero extract containing 2.0 to 2.4 mg per day eleutherosides.
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3 Stars
Vitamin A
See a doctor for evaluation of possible deficiency
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Vitamin A plays an important role in immune system function and helps mucous membranes, including those in the lungs, resist invasion by microorganisms.
Nutrients useful for maintaining healthy immune function are also applicable for preventing infections. Vitamin A plays an important role in immune system function and helps mucous membranes, including those in the lungs, resist invasion by microorganisms. However, most research shows that while vitamin A supplementation helps people prevent or treat infections in developing countries where deficiencies are common, little to no positive effect, and even slight adverse effects, have resulted from giving vitamin A supplements to people in countries where most people consume adequate amounts of vitamin A. Moreover, vitamin A supplementation during infections appears beneficial only in certain diseases. An analysis of trials revealed that vitamin A reduces mortality from measles and diarrhea, but not from pneumonia, in children living in developing countries. A double-blind trial for vitamin A supplementation in Tanzanian children with pneumonia confirmed its lack of effectiveness for this condition. In general, parents in the developed world should not give vitamin A supplements to children unless there is a reason to believe vitamin A deficiency is likely, such as the presence of a condition causing malabsorption (e.g., celiac disease). However, the American Academy of Pediatrics recommends that all children with measles should be given high-dose vitamin A for several days.
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3 Stars
Vitamin C
1 to 4 grams daily
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Vitamin C has antiviral activity, and may help prevent viral infections or, in the case of the common cold, reduce the severity and duration of an infection.
Vitamin C has antiviral activity, and may help prevent viral infections or, in the case of the common cold, reduce the severity and duration of an infection. Most studies on the common cold used 1 to 4 grams of vitamin C per day.
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2 Stars
Echinacea
3 to 5 ml of liquid herbal extracts every two hours, or 300 to 600 mg of powdered herb three times per day, or 5 to 6 cups of tea daily
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Echinacea is both immune supportive and antimicrobial.
In general, human studies have found that echinacea taken orally stimulates the function of a variety of immune cells, particularly natural killer cells.
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2 Stars
Multivitamin
Follow label directions
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A multiple vitamin-mineral formula helped elderly people avoid infections in one double-blind trial.
A multiple vitamin-mineral formula helped elderly people avoid infections in one double-blind trial, but not in another. In a double-blind study of middle-aged and elderly diabetics, supplementation with a multiple vitamin and mineral preparation for one year reduced the risk of infection by more than 80%, compared with a placebo. In another double-blind trial, supplements of 100 mcg per day of selenium and 20 mg per day of zinc, with or without additional vitamin C, vitamin E, and beta-carotene, reduced infections in elderly people, though vitamins without minerals had no effect. That study suggests that trace minerals may be the most important components of a multiple vitamin and mineral formula for preventing infections.
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2 Stars
Multivitamin (Type 2 Diabetes)
Follow label instructions
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Supplementing with a multivitamin–mineral may give your body the nutrients it needs to help prevent common infections.
In a double-blind study, supplementation of middle-aged and elderly diabetics with a multiple vitamin and mineral preparation for one year reduced the risk of infection by more than 80%, compared with a placebo.
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2 Stars
Probiotics
Consult a qualified healthcare practitioner
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Lactobacillus acidophilus produces acids that kill invading bacteria. These and other probiotics inhibit the growth of potentially infectious organisms and have been shown to be effective against some infections.
Lactobacillus acidophilus (the friendly bacteria found in yogurt) produces acids that kill invading bacteria. The effective amount of acidophilus depends on the strain used, as well as the concentration of viable organisms. These and other friendly bacteria known as probiotics inhibit the growth of potentially infectious organisms (pathogens) by producing acids, hydrogen peroxide, and natural antibiotics called bacteriocins and microcins, by utilizing nutrients needed by pathogens, by occupying attachment sites on the gut wall that would otherwise be available to pathogens, and by stimulating immune attacks on pathogens. Infections that have been successfully prevented or treated with friendly bacteria include infectious diarrhea, vaginitis, and urinary tract infections.
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2 Stars
Selenium
100 mcg per day with 20 mg per day of zinc
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Selenium supplements have been reported to help reduce infections in elderly people.
Most, but not all, double-blind studies have shown that elderly people have better immune function and reduced infection rates when taking a multiple vitamin-mineral formula. In one double-blind trial, supplements of 100 mcg per day of selenium and 20 mg per day of zinc, with or without additional vitamin C, vitamin E, and beta-carotene, reduced infections in elderly people, though vitamins without minerals had no effect. Burn victims have also experienced fewer infections after receiving trace mineral supplements in double-blind research. These studies suggest that trace minerals may be the most important micronutrients for enhancing immunity and preventing infections in the elderly.
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2 Stars
Zinc
Refer to label instructions
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Zinc deficiencies can impair immune function. Supplementing with zinc has been shown to increase immune function in healthy people. Zinc lozenges have been found helpful in against the common cold.
Marginal deficiencies of zinc result in immune function impairments. In a double-blind study of healthy elderly people, supplementing with 45 mg of zinc per day for one year significantly reduced the frequency of infections. Some doctors recommend lower amounts of supplemental zinc for people experiencing recurrent infections, such as 25 mg per day for adults and even lower amounts for children (depending on body weight). Zinc lozenges have been found helpful in some studies for the common cold. Long-term zinc supplementation should in most cases be accompanied by a copper supplement in order to prevent zinc-induced copper deficiency.
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1 Star
American Ginseng
Refer to label instructions
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American ginseng supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Asian Ginseng
Refer to label instructions
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Asian ginseng supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Astragalus
Refer to label instructions
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Astragalus supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Barberry
Refer to label instructions
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Barberry is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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1 Star
Chaparral
Refer to label instructions
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Chaparral is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Elderberry
Refer to label instructions
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Elderberry is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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1 Star
Eleuthero
Refer to label instructions
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Eleuthero supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
Double-blind trials have shown that common cold symptoms improve and recovery is faster when andrographis extract containing 48 to 60 mg andrographolides is taken in three or four divided doses daily, beginning as soon as possible after symptoms appear. In addition, preliminary research in Russia suggests andrographis extract may be effective for the treatment of influenza. This extract was also tested for preventing colds in a double-blind study of teenagers. After three months, the group taking 5 mg of andrographolides twice daily had only half the number of colds experienced by the placebo group.
Other preliminary and double-blind research has shown similar benefits for treating the common cold from a combination of andrographis extract and an eleuthero extract containing 2.0 to 2.4 mg per day eleutherosides.
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1 Star
Eucalyptus
Refer to label instructions
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Eucalyptus is an herb that directly attack microbes.
Caution: Do not use eucalyptus oil internally without supervision by a healthcare professional. As little as 3.5 ml of the oil taken internally has proven fatal.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Garlic
Refer to label instructions
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Garlic is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Goldenseal
Refer to label instructions
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Goldenseal is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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1 Star
Green Tea
Refer to label instructions
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Green tea is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Lemon Balm
Refer to label instructions
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Lemon balm is an antiviral and antimicrobial herb.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Ligustrum
Refer to label instructions
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Ligustrum supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Lomatium
Refer to label instructions
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Lomatium is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Maitake
Refer to label instructions
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Maitake supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Molmol
Refer to label instructions
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Myrrh is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Olive Leaf
Refer to label instructions
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Olive leaf is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Onion
Refer to label instructions
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Onion is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Oregano
Refer to label instructions
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Oregano is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Oregon Grape
Refer to label instructions
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Oregon grape is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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1 Star
Osha
Refer to label instructions
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Osha is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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1 Star
Pau d'Arco
Refer to label instructions
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Pau d'Arco is an herb that directly fights both microbes and fungus.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Picrorhiza
Refer to label instructions
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Picrorhiza supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Reishi
Refer to label instructions
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Reishi supports the immune system in the fight against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Rosemary
Refer to label instructions
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Rosemary is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Sage
Refer to label instructions
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Sage is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Sandalwood
Refer to label instructions
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Sandalwood is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Schisandra
Refer to label instructions
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Schisandra supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
Shiitake
Refer to label instructions
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Shiitake supports the immune system and protects against microbes.
Herbs that support a person's immune system in the fight against microbes include the following: American ginseng, andrographis, Asian ginseng, astragalus, coriolus, eleuthero, ligustrum, maitake, picrorhiza, reishi, schisandra, and shiitake.
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1 Star
St. John's Wort
Refer to label instructions
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St. John's wort is an herb that directly attack microbes.
Caution: It is likely that there are many drug interactions with St. John's wort that have not yet been identified. St. John's wort stimulates a drug-metabolizing enzyme (cytochrome P450 3A4) that metabolizes at least 50% of the drugs on the market. Therefore, it could potentially cause a number of drug interactions that have not yet been reported. People taking any medication should consult with a doctor or pharmacist before taking St. John's wort.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Tea Tree
Refer to label instructions
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Tea tree is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Thyme
Refer to label instructions
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Thyme is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Usnea
Refer to label instructions
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Usnea is an herb that directly attack microbes.
Herbs that directly attack microbes include the following: chaparral, eucalyptus, garlic, green tea, lemon balm (antiviral), lomatium, myrrh, olive leaf, onion, oregano, pau d'arco (antifungal), rosemary, sage, sandalwood, St. John's wort, tea tree oil, thyme, and usnea.
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1 Star
Wild Indigo
Refer to label instructions
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Wild indigo is both immune supportive and antimicrobial.
Herbs that support a person's immune system in the fight against microbes and directly attack microbes include the following: barberry, echinacea, elderberry, goldenseal, licorice, Oregon grape, osha, and wild indigo.
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