The Best Probiotic for Immune System Support

Bio-K+ probiotic products promote, support, or maintain digestive and immune health,† and the Elderberry Drinkable with Wellmune® pairs them with an ingredient that supports immune health.† Backed by more than 30 years of research, Bio-K+ combines proprietary strains with functional ingredients that each carry their own dedicated research.

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The Best Probiotic for Immune System Support

Bio-K+ probiotic products promote, support, or maintain digestive and immune health,† and the Elderberry Drinkable with Wellmune® pairs them with an ingredient that supports immune health.† Backed by more than 30 years of research, Bio-K+ combines proprietary strains with functional ingredients that each carry their own dedicated research.

Explore Immune Support Products
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How to Choose Immune Probiotics

A quality probiotic rests on three signals: named bacterial strains with registered trademark codes, functional ingredients with their own dedicated research, and targeted-release technology that helps protect live bacteria from stomach acid on the way to the digestive tract. Bio-K+ features three exclusive proprietary strains validated in 16 published clinical trials and referenced in 45+ peer-reviewed publications. Bio-K+ promotes, supports, or maintains digestive and immune health.†

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Learn About Our Strains

Wellmune® is a natural yeast beta-glucan derived from the cell wall of baker's yeast (Saccharomyces cerevisiae). It is a patented functional ingredient with its own dedicated body of research, distinct from the probiotic strains it is combined with. Wellmune helps support immune health.† This research applies to Wellmune® specifically, not to the probiotic strains or to the product as a whole.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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The Elderberry Drinkable With Wellmune®

Bio-K+ Extra Drinkable Vegan Elderberry with Wellmune® combines 80 billion CFU of three exclusive proprietary strains with Wellmune® in a fermented oat and pumpkin seed base with elderberry powder. Vegan, certified organic, gluten-free, and GMO-free, it is available nationwide. The drinkable base promotes digestive and immune health,† while Wellmune helps support immune health.† CFU is guaranteed until the expiration date, not at the time of manufacture.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Bio-K+ Immune Support Options

In the United States, Bio-K+ offers the Extra Drinkable Vegan Elderberry with Wellmune® (80 billion CFU) and the Immune Support Probiotic Capsules with Wellmune® (25 billion CFU). The drinkable is vegan, certified organic, gluten-free, and GMO-free. The base promotes digestive and immune health,† while Wellmune helps support immune health.† This applies to Wellmune® specifically, separate from the strains, which promote, support, or maintain digestive and immune health across the Bio-K+ range.†

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Choosing a Quality Immune Probiotic

Three criteria help evaluate any immune support probiotic: named strain codes on the label, a CFU count guaranteed until the expiration date, and a functional ingredient with its own dedicated research. Bio-K+ lists full trademark codes for each strain and guarantees CFU accordingly, never at the time of manufacture. The strains promote, support, or maintain digestive and immune health,† while Wellmune® brings its own research profile as a named ingredient on the Elderberry SKU.

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Certifications and Daily Well+Being

Bio-K+ Extra Drinkable Vegan Elderberry with Wellmune® is certified organic, gluten-free, and GMO-free — independently verified, not simply claimed on the label. For readers with dietary restrictions, this vegan, gluten-free, non-GMO fermented base makes it accessible as part of a daily well+being routine. Take one bottle daily, with or without food. Do not mix it with hot beverages, as live bacteria are heat-sensitive. Once opened, consume within 7 days and keep refrigerated.

Speak With Your Healthcare Professional

This page provides product information and general educational context. It does not constitute medical advice. For guidance on which probiotic option supports your individual health needs and daily routine, speak with your healthcare professional or pharmacist, who can factor in your individual circumstances before you begin any new probiotic routine. Bio-K+ probiotic products are available in pharmacies and health food retailers nationwide.

Frequently Asked Questions

How does Wellmune® differ from the probiotic strains in this product?

Wellmune® is a patented yeast beta-glucan functional ingredient. It is not a probiotic strain, and its research profile is separate from that of the probiotic strains it is combined with. The three probiotic strains in Bio-K+ products promote, support, or maintain digestive and immune health,† while Wellmune® brings its own dedicated research profile. Wellmune helps support immune health.† This claim applies to Wellmune® only and is not extended to the probiotic strains.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Is the Bio-K+ Elderberry Drinkable with Wellmune® vegan?

Yes. Bio-K+ Extra Drinkable Vegan Elderberry with Wellmune® is vegan. The fermented base is made from oats and pumpkin seeds with no dairy ingredients. It is also certified organic, gluten-free, and GMO-free, making it accessible to a range of dietary needs. Readers with specific dietary requirements or allergies should review the current product label for the most up-to-date ingredient and certification details. This product is available nationwide.

Does Bio-K+ guarantee the CFU count in its immune support products?

Yes. Bio-K+ guarantees the live bacteria count in all its probiotic products until the expiration date, not at the time of manufacture. This applies to the Elderberry Drinkable with Wellmune®, which delivers 80 billion CFU, and to the Immune Support Capsules with Wellmune® (25 billion CFU). A guarantee at the end of shelf life is a meaningful quality distinction.

Does the Bio-K+ Elderberry Drinkable with Wellmune® need to be refrigerated?

Yes. Bio-K+ Extra Drinkable Vegan Elderberry with Wellmune® requires refrigeration because it is a live-culture fermented drinkable. The 80 billion CFU is guaranteed until the expiration date under appropriate refrigerated storage. Once opened, consume within 7 days. Serve it chilled, and do not mix it with warm or hot beverages, as live bacteria are sensitive to heat.

Can I take a probiotic for immune support every day?

Daily, consistent use is the usual way to keep a probiotic routine on track. Bio-K+ Extra Drinkable Vegan Elderberry with Wellmune® is formulated for one bottle daily, making it easy to fit into your day. Take it with or without food, and do not mix it with hot beverages, as live bacteria are heat-sensitive. If you have a health condition, are immunocompromised, or take medication, consult your healthcare professional before starting any new probiotic routine.

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.