Viridian
Synerbio Saccharomyces Boulardii
The non-pathogenic yeast Saccharomyces boulardii was first discovered by French microbiologist, Henri Boulard in 1920 in the skin of Lychee fruit. Considered an ideal supplement to take alongside antibiotics and when travelling overseas, this remarkable yeast is one of the great success stories in probiotic therapy.
Synerbio Saccharomyces boulardii Veg Caps also includes five strains of Lactobacilli and Bifidobacteria, plus prebiotics. The unique Prebiotic FS2-60 offers full-spectrum prebiotic oligosaccharide and plant-derived inulin. FS2-60 is not digested but is utilised by the friendly flora to increase colonisation of Lactobacilli and the Bifidobacteria whilst reducing the foothold of unfriendly species.
The human gut is home to an immense population of bacteria, estimated at 39 trillion microbial cells that include bacteria, viruses and fungi. Because of the sheer size and importance of the gut bacteria, this microbial population can be viewed as a bacterial organ, about the size of your liver and just as important.
Contains 100% active ingredients formulated by expert nutritionists with no artificial fillers and no nasties. Sourced according to Viridian’s strict ethical criteria including no animal testing, GMO or palm oil.
Just to make you aware we are currently updating our packaging so your supplement may look a little different. Please don't worry, it's the same goodness inside.
Pickup currently unavailable at FETTLE
How to Use
Ingredients
Health & safety
Food supplements should not be used as a substitute for a varied diet. Not recommended during pregnancy or breastfeeding unless on the advice of a healthcare practitioner. If taking prescribed medication, consult a physician before using this product. Do not exceed stated dose unless directed by a healthcare practitioner.
Product information
What delivery options are there?
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Free Local Delivery: Orders over £30 within a 3-mile radius qualify for free local delivery.
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Click & Collect: Order online and collect in-store. Most orders are ready within two hours.
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Nationwide Delivery: We offer delivery across the UK, with free delivery on orders over £50.
Which payment methods do you accept?
We accept all major credit and debit cards, as shown at checkout. You can also pay using:
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Apple Pay
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Google Pay
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PayPal
Please ensure that your billing address matches the address on your card statement. You don’t need an account to shop with us—but creating one allows you to track your orders and manage preferences easily.
How do I return my items?
Returns can be made in-store. Just bring your item(s) along with proof of purchase, such as your order confirmation or receipt.
How can I contact you?
Visit our contact us page for details.
Can I change or cancel my order?
If your order hasn’t been processed yet, we’ll do our best to help. Please contact us as soon as possible.
Fettle is a health store, reimagined.
Built in Holmfirth. Inspired by the wild.
We stock a wide range of curated products - carefully chosen foods, proven supplements, and low-impact home goods—with one aim: to help people feel well, live fully, and tread lightly.
We're guided by four principles:
Roam – move with purpose
Replenish – eat well, choose consciously
Rest – take space to recover
Renew – build resilience, inside and out
We favour quality over quantity, makers over mass production, and brands that back their ethics with action. You’ll find organic staples, therapeutic herbs, and sustainable tools for daily living—all under one roof.
Upstairs, our practitioner room offers tailored support, from nutrition to movement and mental clarity. Downstairs, you’ll find the starting point for your next chapter—whether that’s a new habit, a better meal, or a slower way of being.
Fettle is a basecamp for the everyday explorer.
Come as you are. Leave with what you need.