Viracin® Plant Tannin

Viracin contains active plant tannins that support the body's ability to maintain healthy gastrointestinal flora and support detoxification in addition to supporting healthy immune system function*.

Viracin 60's capsules is currently out of stock and expected ship date end of September, early October. Place an order today and receive 20% off your order. Use code Viracin20 at checkout. Email with questions.

  • The plant tannins in Viracin, Acerin and Canaigre, support the gastrointestine's ability to maintain healthy flora balance. They also support the body's natural immunity*. Acerin and Canaigre also exhibit significant antioxidant-activity due to their active polyphenolic content*.


  • Viracin is supportive of gastrointestinal health. It can help support healthy flora balance and digestion. What sets is apart from Tanalbit, however, is that it also supports the immune system and can be comprehensively helpful for overall immune health in addition to gastrointestinal health. 

    Tannic acid and polyphenols, the active components found in Viracin, may cause constipation and/or diarrhea. Increased water intake is suggested in cases of constipation and reduction in suggested dosage with diarrhea.

  • Frequently Asked Questions About Viracin

    1. What are Tannins?
    2. Is it safe to consume Plant Tannins?
    3. Does Viracin affect beneficial bacteria? Will it deplete minerals?
    4. Are there contraindications for Viracin? Does Viracin cause resistance buildup?
    5. Should I use Tanalbit or Viracin? When should I use them together?

    What are Tannins?

    Plant tannins are water soluble, polyphenolic compounds. They are categorized as either hydrolyzable or condensed. Tannins have astringent and antioxidant-activity properties and are renowned for their protective qualities. Plant tannins give the bitter taste to black teas and are a significant component of Redwood Tree bark, giving it its distinct red color.

    Frequent tea drinkers and eonophiles consume large amounts of plant tannins.

    Is it safe to consume plant tannins?

    Yes. Viracin contains condensed tannins. Acerin and Canigre complexed with L-Proline are condensed tannins. Condensed tannins have remarkable antioxidant-activity properties*. The body does not absorb condensed tannins and when consumed in a supplement form like Viracin, can provide antioxidant support to the gastrointestine. 

    The condensed tannins used in Viracin may affect minimally affect mineral absorption. Intensive Nutrition suggests supplementing with a comprehensive multivitamin to support mineral and nutrient balance while using Viracin or any other tannin product, whether a supplement or beverage like tea or wine.

    Viracin is not absorbed by the body, is non-toxic and can safely be taken by a variety of individuals.

    Does Viracin affect beneficial bacteria? Will it deplete minerals?

    We suggest using a probiotic and multivitamin to support beneficial bacteria growth and healthy mineral balance. Tannins may not be suggested for individuals in poor health.

    Are there contraindications for Viracin? What about side effects?

    Occasionally individuals may experience temporary constipation after taking Viracin. To avoid constipation, increase water intake and consider taking a Magnesium supplement. Sometimes tannins may cause nausea or upset stomach. To prevent this, take Viracin with a small, protein snack.

    Tannins, the active ingredients in Viracin, may interfere with the absorption or efficacy of some medications. They may also not be recommended for individuals with significant nutrient deficiencies or individuals with chronic maladies or under physician supervision for serious ailments. Please consult with your health professional prior to introducing Viracin. There are some known contraindications for tannins (general) and medications. Please click on the Ingredients tab for additional information.

    Questions? Please email Olivia Melaugh, our CIO and product support guru, at

    Should I use Tanalbit or Viracin? When should I use them together?

    Tanalbit, Viracin and Tabit rely on the astringent and antioxidant activity of plant tannins. Each contain different tannin extracts which themselves behave differently. As Tanalbit contains casein, its action is more comprehensive, that is, it can travel to the large intestine and colon. Viracin might be an alternative if milk allergy or sensitivity is an issue. 

    When to use Tanalbit
    • For comprehensive target of GI upset
    • Suggested as a detoxification agent and for food sensitivities

    When to use Viracin
    • Support for health bacteria balance in the GI
    • May support immune system
    • Suggested when casein not tolerated (see Tanalbit) and can be used to support the bodies' detoxification processes
    If you have a more detailed question, please email our nutrition guru, Olivia Melaugh, at for help.


    Serving size: 2 capsules; For GI support, 1-2 servings (3-6 capsules), 3 times daily, 30-60 minutes before meals or with a small protein snack if cannot tolerate product on an empty stomach. For immune support, 2 servings daily

    Capsules per bottle: 60 or 120 vegetarian capsules

    Active ingredients: 2 capsules = Zinc 6 mg, Tannins = 4 mg, Polyphenols = 16 mg, (from Proprietary blend of Acerin and Canaigre root powder), L-Proline = 18 mg

    Inert Ingredients: Hydroxypropyl Methylcellulose, Microcrystalline cellulose, Magnesium Stearate, Silica

    Allergen Statement: This formula is free of yeast, soy, egg, gluten, wheat, milk, starch, nut (tree, peanut, etc.) artificial colors or preservatives.


    Tannins may interfere with the absorption/effectiveness of alkaline or steroidal medications. Avoid tannins when using Atropine, Cardec DM, Codeine, Ephedrine and Pseudoephedrine, Lomotil/Lonox, Loop Diuretics, Spironolactone, Theophylline/Aminophylli, Thiazide Diuretics, Triamterene. This is not an exhaustive list. ALWAYS check with your physician BEFORE taking Tabit or other supplements.

    Because tannins are astringents, Viracin may cause temporary constipation. If this occurs, use Magnesium/Vitamin C Supplement and increase water intake by at least 3 glasses of water (8 oz. each). Viracin is not recommended for pregnant women or nursing mothers. It is not recommended for those with chronic illness or individuals suffering from malnutrition or nutrition related illness. If you have any question about your medication and Viracin, ALWAYS check with your physician BEFORE adding Viracin to your daily regimen.

  • Suggested Dosage: For GI support, 1-2 servings (3-6 capsules), 3 times daily, 30-60 minutes before meals or with a small protein snack if cannot tolerate product on an empty stomach. For immune support, 2 servings daily

  • Do you have a question about Viracin?

    Please email with your product question.


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