Great product, curb the appetite and it does what it says I would buy it again for sure
Great product. Work really well.
Very good so far, will continue using it.
Important safety warning — risk of choking.
Always mix with plenty of liquid — a minimum of 250ml per heaped teaspoon — and drink immediately. Never take dry. Not suitable for anyone with swallowing difficulties. Glucomannan swells substantially in water, which is how it works, and taking it with inadequate fluid may cause it to swell in the throat.
Always mix with plenty of liquid — a minimum of 250ml per heaped teaspoon — and drink immediately. Never take dry. Not suitable for anyone with swallowing difficulties. Glucomannan swells substantially in water, which is how it works, and taking it with inadequate fluid may cause it to swell in the throat.
BioSlim — Psyllium Husk & Glucomannan Fibre Blend
180g powder · minimum 36 servings · £13.99 · halal & kosher approved
The average UK adult eats around 18g of fibre a day. The NHS recommends 30g — a daily shortfall of roughly 12g that contributes to sluggish digestion, blood sugar instability and difficulty managing weight. A well-formulated fibre supplement doesn't replace a good diet; it closes the gap.
BioSlim combines four fibre sources — psyllium whole husks, glucomannan from konjac root, sugar beet fibre and inulin (FOS) — with L-glutamine, live cultures and three traditional digestive herbs. It carries two EFSA-authorised health claims.
The two authorised health claims
Glucomannan and weight loss
Glucomannan is the only dietary fibre with an EFSA-authorised weight loss claim: “glucomannan in the context of an energy-restricted diet contributes to weight loss.”
The conditions of use matter. The beneficial effect is obtained with a daily intake of 3g of glucomannan in three doses of 1g each, taken together with 1–2 glasses of water before meals, within an energy-restricted diet.
Each 5g serving of BioSlim contains 1.05g of glucomannan. Three servings a day, each taken before a meal, meets the claim exactly as worded. One serving a day does not — and no fibre supplement produces weight loss without the energy-restricted diet the claim specifies.
Sugar beet fibre and faecal bulk
Sugar beet fibre contributes to an increase in faecal bulk, and does so two ways: the insoluble components absorb water in the large intestine, while the soluble components are fermented by gut bacteria, increasing bacterial mass.
What's in every 5g serving
- Dietary fibre — 3.5g
- Glucomannan — 1.05g
- Sugar beet fibre — 0.33g
Full ingredient list: psyllium husk powder (Plantago ovata), glucomannan, sugar beet, L-glutamine, inulin (fructo-oligosaccharides), fennel seed, peppermint leaf, ginger root, bacteria blend (Lactobacillus acidophilus, Bifidobacterium bifidum), sweetener: steviol glycosides (stevia leaf extract).
What each ingredient is doing
- Psyllium whole husks — the clinical gold standard soluble fibre for bowel regularity and IBS symptom management. Forms a viscous gel that normalises transit time in both directions.
- Glucomannan (konjac root) — highly viscous soluble fibre that expands substantially in water, creating lasting satiety. Carries the EFSA weight loss claim.
- Sugar beet fibre — carries the authorised faecal bulk claim.
- Inulin (FOS) — prebiotic fibre that feeds beneficial gut bacteria.
- L-glutamine — the amino acid intestinal cells use as a primary fuel source, studied for gut wall integrity.
- Live cultures — Lactobacillus acidophilus and Bifidobacterium bifidum.
- Fennel seed, peppermint leaf, ginger root — traditional digestive herbs. The peppermint also makes the powder far easier to drink than plain psyllium.
- Stevia leaf extract — the only sweetener. No sucralose, no added sugar.
How to take it
Take 30 minutes before a meal. Add 1 to 2 heaped teaspoons (5g to 10g) to about a quarter of a glass of water or juice. Mix slowly in all directions until it forms a smooth paste, then keep stirring as you add more liquid until the glass is full. Drink immediately, then follow with another full glass of liquid. Take 1 to 3 times daily.
Use a minimum of 250ml of liquid per heaped teaspoon. For the glucomannan weight loss protocol, take three 5g servings daily before meals within an energy-restricted diet.
Dietary and allergen information
Vegan. Vegetarian. Halal approved. Kosher approved. Gluten-free. Dairy-free. No artificial colours, flavours, preservatives or added sugar.
Manufactured in a facility that also handles nuts, wheat, soy, dairy and other common allergens.
Frequently asked questions
How much glucomannan do I need for the weight loss claim?
3g per day, as three separate 1g doses with 1–2 glasses of water before meals, within an energy-restricted diet. Each BioSlim serving contains 1.05g, so three servings daily meets it.
Why is the choking warning so prominent?
Glucomannan expands dramatically in water — that swelling is the satiety mechanism. Taken dry or with too little liquid it can swell in the throat or oesophagus. Always use at least 250ml per heaped teaspoon and drink immediately once mixed.
How many servings are in a pot?
A minimum of 36, based on 5g servings. At three servings a day for the full glucomannan protocol, that is around 12 days.
Does it taste like plain psyllium?
No. It is lightly flavoured with peppermint leaf and sweetened with stevia, which most people find much easier to drink than unflavoured psyllium husk.
Is it suitable during pregnancy?
Consult your midwife or GP before taking any fibre supplement during pregnancy or breastfeeding.
Related products
BioSlim Psyllium & Glucomannan — buy now · BioTic 4 Billion probiotic · MagneBowel magnesium bowel formula · Gut Health UK · Weight & Body UK
Food supplements should not replace a varied diet or healthy lifestyle. Risk of choking for people with swallowing difficulties or when taken with inadequate fluid. Always take with plenty of water. Consult your GP before use if pregnant, breastfeeding, or managing a diagnosed health condition.