Energy · Metabolic Health · Skin Hair & Nails · Women's Health

Biotin 10,000 mcg – 90 servings

Name: Biotin 10,000 mcg
Rating: 4.7 (18 reviews)

✓90-DAY MONEY-BACK GUARANTEE

$34.95$0.38 PER SERVING

A full 10,000 mcg of biotin in one capsule — the high-potency amount people actually reach for when hair feels thin, nails split, and skin looks tired. Three months in a bottle at one a day, with the exact amount printed on the label and every single batch independently tested and published.*

Stronger, less brittle nails

Support for thicker, healthier hair

Skin that looks like it is coping

Energy from the food you eat

Supports healthy nerve function

Three months in every bottle

THIRD-PARTY TESTEDcGMP FACILITYVEGAN CAPSULENON-GMOCOA PER LOTGLUTEN-FREE

How to take

Take 1 capsule daily, with or without food. Biotin is water-soluble, so consistency matters more than timing — take it whenever you will remember it.. Consistency matters more than timing — pick a moment you'll remember daily.

IMPORTANT: Biotin can interfere with certain laboratory tests, including some thyroid and cardiac troponin assays, and may cause falsely high or falsely low results. Tell your healthcare professional and laboratory that you are taking biotin before any blood test. Consult a healthcare professional before use if you are pregnant, nursing, taking medication, or managing a medical condition. Keep out of reach of children.

Quality & testing

Manufactured in the USA in a cGMP-certified facility. Raw materials are tested and qualified before use, and every finished batch is verified by an independent lab for identity, potency, heavy metals, and microbials. Results publish on this page per lot.

Shipping & subscription

Subscribe at any frequency — every month, every 2 months or every 3 months — and save 10%. Subscribe to a second product and every subscription goes to 20%. Free shipping on subscriptions, and you can pause, skip or cancel anytime from your account — no phone calls, no hoops.

What it supports

Stronger, less brittle nails

Biotin's most consistent research is on nail firmness and thickness — the clinical work used high-potency doses over several months.

Support for thicker, healthier hair

Hair is built from keratin, and biotin is a cofactor in the enzymes that keep that production running.

Skin that looks like it is coping

Biotin supports the normal maintenance of skin, one of the fastest-renewing tissues you have.

Energy from the food you eat

Biotin is a cofactor for the carboxylase enzymes that turn fat, carbohydrate and protein into usable energy.

Supports healthy nerve function

The same enzyme systems biotin supports are involved in normal nervous-system function.

Three months in every bottle

Ninety capsules at one a day. Biotin research runs over months, not weeks, and the bottle is sized for that.

*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.

High potency, plainly stated.

Biotin (vitamin B7) · 10,000 mcg

	Biotin 10,000 mcg	Low-dose biotin	Hair & nail blends	Biotin gummies
A full 10,000 mcg per serving	●	—	Varies	—
One capsule, no splitting	●	Varies	Varies	—
Exact amount disclosed	●	●	—	Varies
No proprietary blend	●	●	—	Varies
No added sugar	●	●	Varies	—
Certificate published every batch	●	—	—	—

GENERAL FORM COMPARISON — INDIVIDUAL PRODUCTS VARY BY BRAND

What's happening
while you wait.

*INDIVIDUAL RESULTS VARY. THESE STATEMENTS HAVE NOT BEEN EVALUATED BY THE FDA.

Inside the formula

Biotin (vitamin B7) · 10,000 mcg

Biotin is a B vitamin your body cannot store in any useful quantity, which means it needs topping up daily. It works as a cofactor for the carboxylase enzymes that sit at the centre of how you handle fat, carbohydrate and protein — and keratin, the protein hair and nails are built from, depends on that machinery running properly. The clinical work on brittle nails used doses far above what food provides, which is why high-potency biotin exists at all. Ours is 10,000 mcg in a single capsule: the full amount, disclosed exactly, with nothing else riding along.

CUSTOMER REVIEWS

4.7 /5 ★

Based on 18 reviews

94%

Would recommend this supplement

Customers say

✦ Summarised from customer reviews.

Reviewers most often mention how small the capsule is and how easy it is to swallow, with several noting no taste, smell or stomach upset. Nail comments are the most common result described — less splitting, less peeling, more even growth — and reviewers are consistent that it takes time: most describe noticing something between four weeks and two months rather than immediately. A few mention hair feeling fuller, usually with the caveat that it is early. The most critical reviews are not about problems but about patience, with one reviewer not noticing a clear change after a first bottle.

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Frequently asked
questions

How do I know what's on the label is in the bottle?

Trust should be verifiable. Every batch we produce is tested by an independent laboratory, and the certificate of analysis for your exact lot is published on this page — potency, heavy metals, microbials. Testing begins the moment a raw material arrives, continues through production, and no batch is released until every result clears. The label is a claim. The COA is the proof.

How do you choose your ingredients and doses?

We formulate from peer-reviewed clinical research and dose to match it. We select the highest-grade material available for each ingredient, in the form the body absorbs best, and where a patented or branded form is the one that has actually been studied, that is the one we use. Every active appears at its exact amount, with no proprietary blends and nothing added that doesn't need to be there.

Where are CoreLabs supplements made?

In our own cGMP-certified facility in California's Central Valley. Manufacturing in-house means quality is our responsibility at every step rather than a supplier's promise. Raw materials are purchased through established US suppliers who import and qualify them, and every material is tested against our own specification before it enters production — wherever it originated.

Why are CoreLabs supplements more expensive?

Because of what goes in. We buy the highest grade of each raw material, in the most absorbable form, and we work with the branded and patented ingredient houses whose material the clinical research was actually run on — names like Lonza, Albion, RIBUS, Sabinsa and Indena. Wherever possible those materials are made domestically. Our capsules are titanium-dioxide free. Then it is made in our own facility and third-party tested batch by batch. Every one of those choices costs more than the alternative, and the price reflects it. Anyone can claim quality — we publish ours.

How long before I notice anything?

Longer than most people expect. Hair and nails grow slowly, so the clinical work ran for several months rather than weeks. Give it a full bottle before judging it.

Why such a high dose?

Because the research on brittle nails and hair used high-potency amounts, not the small amount that prevents a deficiency. Those are two different questions, and this product answers the first one.

Will it interfere with blood tests?

It can. Biotin is known to affect certain laboratory assays, including some thyroid and cardiac tests, and can produce falsely high or low results. Tell your healthcare professional and the laboratory that you take biotin before any blood draw.

Should I take it with food?

Either way. Biotin is water-soluble and absorbs well on its own. Take it whenever you will remember it.

How long does a bottle last?

Ninety capsules at one a day is three months.