Biotin, also called vitamin B7, B8 or vitamin H, is a water-soluble B vitamin found naturally in eggs, nuts, legumes, whole grains and some vegetables. It is essential, meaning the body cannot make enough of it and must obtain it from diet or supplementation. Biotin facilitates the conversion of carbohydrates, fats and proteins into usable cellular energy, acts as a cofactor for the first step of fatty-acid synthesis, is involved in the breakdown of branched-chain amino acids (leucine, isoleucine, valine), and supports gluconeogenesis, helping maintain stable blood sugar.

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Biotin is widely associated with hair, skin and nail health in supplement tradition, thanks to its role in protein synthesis, particularly keratin — the main structural protein of hair, skin and nails. As a coenzyme involved in protein synthesis, biotin supports the normal biological processes behind these tissues, and an adequate intake is one of the nutritional factors that contribute to maintaining their normal condition.

Recommended daily biotin intakes for adults are generally around 50mcg, so 5,000mcg represents a dose well above standard reference values. This higher dosage is often chosen by people looking for targeted nutritional support for hair, skin and nails, or wanting to supplement a diet they consider insufficient. As biotin is water-soluble, any amount the body doesn’t use is naturally cleared through the urine.

Take 1 capsule per day with a meal and a glass of water, for optimal absorption. The 120-capsule bottle provides four months of use at one capsule a day.

Do not exceed the recommended daily dose. Food supplement — not a substitute for a varied, balanced diet and a healthy lifestyle. Keep out of reach of children. Consult a healthcare professional before starting supplementation, particularly if you have a pre-existing condition or are on medication. Store in a cool, dry place, away from light.

Is Biotin 5000mcg suitable for vegetarians?

Yes. The capsule shell is hypromellose, a plant-based material, and the other ingredients (rice flour, vegetable stearic acid, silicon dioxide) are also non-animal in origin — suitable for vegetarian and vegan diets.

Can I take biotin 5000mcg continuously?

Biotin is water-soluble, so excess amounts are naturally cleared by the body. Even so, for any long-term supplementation, we recommend consulting a healthcare professional to tailor the dose to your needs.

When can I expect to see results from a biotin course?

Effects take time — since the hair and nail renewal cycle spans weeks to months, we generally recommend maintaining supplementation for at least two to three months before assessing results. Consistency is key.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.