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    What is Subtivir?

    Subtivir™ provides an innovative combination of ingredients that support antibody production, stimulate the immune system as well as attack pathogens with a focus on the respiratory system. It is known that respiratory viral infections are predominant during the flu season.

    Immunoglobulins, also known as antibodies, act as a critical part of the immune response by specifically recognizing and binding to antigens, such as bacteria or viruses, and aiding in their destruction.

    Immunoglobulin A (IgA) antibodies are found in the mucous membranes of the lungs, sinuses, stomach, and intestines. They’re also in fluids like saliva as well as in the blood.

    Immunoglobulin G (IgG) is the most common type of antibody in your blood and other body fluids. These antibodies protect you against infection by “remembering” which germs you’ve been exposed to before.

    While standardized bovine colostrum provides Immunoglobulin G (IgG), Bacillus subtilis stimulates the production of Immunoglobulin A (IgA).

    IgG rich colostrum helps to support immune function within the upper respiratory tract1,2 (Health Canada Bovine colostrum monograph; Ulfman et al -2018).

    Bacillus subtilis supplementation during the winter period is a safe effective way to stimulate immune responses by inducing a higher concentration of IgA antibodies3 (Lefevre et al. -2015). IgA antibodies are very important for lung health and can neutralize viruses4, 5 (Thorax – 1986; Mazanec et al-1992)

    Andrographis paniculata standardized to 30% Andrographolide was found superior to placebo for reducing symptom severity in upper respiratory tract infections. The dominant symptom relief is improvement in cough intensity and frequency as well as severity of sore throat symptoms6,7 (Hu et al -2017; Coon et al -2004). Andrographolide has broad spectrum antiviral properties by restraining virus replication and virus-induced pathogenesis8 (Gupta et al. 2017).

    A 100:1 extract from garlic is an additional tool against respiratory infections (Health Canada Monograph – Garlic).

    Who needs Subtivir?

    A strong antiviral to be used during flu season to support the immune system and relieve the symptoms associated with respiratory tract infections. Can be taken as a treatment or preventively throughout the year to protect against viruses, bacteria and fungi infections.


    Ingredients / vegetable capsule:

    Bovine colostrum (Bos taurus – 30% IgG)250 mg
    Extract of Andrographis paniculata, (providing 30% Andrographolide)250 mg
    Bacillus subtilis20 mg, equivalent to 2×109 CFU * (100×109 / g)
    Microcrystalline cellulose (filler)25 mg
    Garlic extract (Allium sativum) extract 100:110 mg
    Ascorbyl palmitate (antioxidant)5 mg
    Vegetable capsule

    *CFU – colony-forming units

    Free of: gluten, soy, peanuts, lactose, wheat, eggs, preservatives, artificial colors or sweeteners, sugar, starch, salt, yeast, genetically modified organisms. Suitable for vegans. No GMOs.


    Recommended way of use (adults): one or two capsules once or twice a day, or as recommended by your healthcare practitioner.

    Warnings and precautions

    • Do not administer to pregnant or lactating women.
    • Seek medical advice if problems persist or worsen.
    • Keep out of the reach and sight of small children.
    • Do not use if the safety seal is damaged or missing.
    • Keep away from direct light, heat and moisture in the original package.
    • Do not exceed recommended dose for daily consumption.
    • Dietary supplements do not replace a varied and balanced diet and a healthy lifestyle.


    1. Health Canada Bovine Colostrum Monograph August 28, 2018
    2. Laurien H. Ulfman et al.; Effects of Bovine Immunoglobulins on Immune Function, Allergy, and Infection; Frontiers in Nutrition, June 2018, Volume 5, Article 52
    3. Marie Lefevre et al.; Probiotic strain Bacillus subtilis CU1 stimulates immune system of elderly during common infectious disease period: a randomized, double-blind placebo-controlled study; Immunity & Ageing (2015) 12:24
    4. Immunoglobulins in the lung; Thorax 1986;41:337-344
    5. Mary B. Mazanec et al. Intracellular neutralization of virus by immunoglobulin A antibodies; Proc. Natl. Acad. Sci. USA; Vol. 89, pp. 6901-6905, August 1992 Immunology
    6. Xiao-Yang Hu et al.; Andrographis paniculata for symptomatic relief of acute respiratory tract infections in adults and children: A systematic review and meta-analysis; PLoS ONE 12(8): e0181780. -2017
    7. Joanna Thomson Coon et al., Andrographis paniculata in the Treatment of Upper Respiratory Tract Infections: A Systematic Review of Safety and Efficacy, Planta Med 2004; 70:293-298
    8. Swati Gupta et al.: Broad-spectrum antiviral properties of andrographolide- Archives of Virology March 2017

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    *The results may vary from person to person, it is not mandatory to get the promised results mentioned on the site, or those already obtained by the persons who submitted their testimonials.