Pro-Bio Defense is a multi strain probiotic that helps support gastrointestinal and immune system health, built on Kirkman Laboratories' allergy-friendly standards. Seven strains, including Saccharomyces boulardii, provide 20 billion CFU per capsule. Allergy-friendly, gluten and dairy free, with no artificial additives. Refrigeration helps keep potency and ensures consistent quality. It slots easily into daily routines.

Available Sizes & Variants:

90 capsules – Daily probiotic capsules designed for ongoing support.

Benefits & Features:

• Probiotics help gut health.
• Delivers 20 billion CFU across seven strains, including Saccharomyces boulardii, to promote a balanced microbiome and support regular digestion for daily comfort and immune system booster.
• Allergy-friendly formulation suitable for sensitive individuals, gluten and dairy free.
• Manufactured under current Good Manufacturing Practice standards with ultra testing for 950 contaminants to ensure probiotic purity.
• Refrigeration helps maintain probiotic viability and potency throughout shelf life.

Kirkman Laboratories has built a reputation on careful, allergen friendly formulations. Pro-Bio Defense expands their Pro-Bio Gold platform with a seven-strain blend that includes Saccharomyces boulardii, designed to stay stable when refrigerated. The line uses a stabilized formula and is produced in the United States with ultra testing for 950 contaminants, aiming to deliver reliable probiotics that support daily gut balance and immune health.

Stabilized probiotic strains, saccharomyces boulardii, inulin, microcrystalline cellulose, silicon dioxide, magnesium stearate (vegetable), plant cellulose capsule.

• GTIN: 790
• Manufacturer: Kirkman Laboratories
• Categories: Best SellersKirkman Labs SupplementsNew ArrivalsPopular Supplement BrandsSubscribe & Save Products
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one capsule daily, or as directed. For intensive use, take two capsules daily, divided into two doses. Take 1 capsule per day or as directed by your healthcare practitioner.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Saccharomyces boulardii

Saccharomyces boulardii is essentially a probiotic yeast, which helps keep gut microflora balance and normal digestion in your gut.

In this blend it’s included among seven probiotic strains to make a hypoallergenic, refrigerated mix that keeps viability and stability.

What Does Saccharomyces boulardii Do?

Probiotic yeasts like Saccharomyces boulardii help support gut health and the immune system by nudging a balanced gut ecosystem, which is described for probiotic blends here.

This information fits with the usual use of multi-strain probiotic blends, which are built to support normal gut function and immune support via a mix of microbes.

This brand's standing for specialised, hypoallergenic probiotic blends makes Kirkman Laboratories a great match for Welzo's probiotic lineup. The maker is known for thorough testing and a dedication to purity, positioning Kirkman as a reputable clinician-led partner in high-grade gut-health products. Our medical team notes Kirkman’s longstanding presence in the specialised supplement market, particularly with the Pro-Bio Gold line, which underpins Pro-Bio Defense as an expanded platform built on their probiotic know-how.

Welzo assessed Kirkman with our team of clinicians to ensure alignment with our standards for safety, quality and consistency. The brand consistently emphasises cGMP manufacturing, rigid testing against 950+ potential contaminants, and third-party potency verification, all of which are key to our vetting process and to our focus on ingredient quality and purity. Discover more about our evaluation and verification steps through our team of clinicians and how we verify ingredient quality.

So, to sum up, Kirkman Laboratories earns Welzo endorsement for this product because of its proven manufacturing discipline, concrete quality controls, and recognised know-how in hypoallergenic probiotic blends, making it a solid partner for Pro-Bio Defense.