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Biotin (Vitamin B7)
vitamin · 143 active deals
How much does Biotin (Vitamin B7) cost?
The best-value Biotin (Vitamin B7) right now is about $0.03 per dose — across the 93 we can price per dose the median is $0.119/dose, so shopping on cost-per-dose can cut your cost several-fold. Every Biotin (Vitamin B7) deal here is ranked by cost per dose — what you actually pay per serving, not the sticker price — because forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Prices checked · live from the Amazon US catalog.
Right now the best value across our full Biotin (Vitamin B7) catalog is at $0.03 per serving.
Median $0.119/servingCheapest quartile under $0.066across 93 tracked Biotin (Vitamin B7) deals
What Biotin (Vitamin B7) does
Biotin is a B vitamin and essential nutrient that acts as a cofactor for five carboxylase enzymes involved in critical steps of the metabolism of fatty acids, glucose, and amino acids, and it also plays roles in histone modifications, gene regulation, and cell signaling. Because signs of biotin deficiency include skin rashes, hair loss, and brittle nails, biotin supplements are often promoted for hair, skin, and nail health; however, the NIH notes these claims are supported, at best, by only a few small studies and case reports (for example, small uncontrolled studies on brittle nails and case reports in children and infants). The NIH states that future studies are needed to determine whether biotin supplements might improve hair, nail, and skin health, especially among healthy people. — per the NIH Office of Dietary Supplements; not medical advice.
Forms & absorption
According to the NIH, biotin is available in dietary supplements containing biotin only, in supplements combining B-complex vitamins, and in some multivitamin/mineral products. The sheet notes that the absorption rate of oral, free biotin is 100%, even when people consume pharmacologic doses of up to 20 mg/day; it does not otherwise describe bioavailability differences between distinct chemical forms.
Food sources of Biotin (Vitamin B7)
Many foods contain some biotin, but those with the most include organ meats, eggs, fish, meat, seeds, nuts, and certain vegetables such as sweet potatoes. Beef liver is especially rich (about 30.8 mcg, or 103% of the Daily Value, per 3 ounces), followed by a whole cooked egg (10 mcg) and canned salmon (5 mcg per 3 ounces). The biotin content of food can vary, and raw egg whites contain avidin, which binds biotin and prevents its absorption unless the egg is cooked — per the NIH Office of Dietary Supplements.
Biotin (Vitamin B7) deficiency — who's at risk
Biotin deficiency is rare, and severe deficiency in healthy people eating a normal mixed diet has never been reported; signs appear gradually and can include thinning hair progressing to total body hair loss, a scaly red rash around the eyes, nose, mouth, and perineum, brittle nails, seizures, and neurological findings such as depression and lethargy. Among the groups most likely to have inadequate biotin status are people with the rare inherited biotinidase deficiency, those with chronic alcohol exposure (which inhibits biotin absorption), and pregnant and breastfeeding women — at least a third of pregnant women develop marginal biotin deficiency despite normal intakes — per the NIH Office of Dietary Supplements.
When and how to take Biotin (Vitamin B7)
Biotin (vitamin B7) is water-soluble and can be taken any time, with or without food.
Can you take Biotin (Vitamin B7) with other supplements?
Important: high-dose biotin can distort common lab tests — including thyroid and heart (troponin) panels — giving falsely high or low results. Stop biotin a few days before bloodwork and tell the lab you take it.
General guidance on timing and absorption, not medical advice. Check with a clinician about your medications and conditions.
Micro Ingredients 2 Pack Multi Collagen Pills for Women & Men
Micro IngredientsAmazon.com
$0.04/serving
$39.990°
Built by Nature Biotin 10,000 mcg for Hair Growth Women
Built by NatureAmazon.com
$0.03/serving
$9.990°
Swedish Nutra - 10,000 mg Hydrolyzed Marine Collagen Liquid…
Swedish NutraAmazon.com
$2.12/serving
$127.000°
BioSchwartz Biotin Collagen Keratin Supplement - Hair Vitamins…
BioSchwartzAmazon.com
$0.25/serving
$14.970°
Biotin 10000mcg/10g - SuperSmart | High Potency Vitamin B7…
SuperSmart USA LLCSuperSmart
$0.18/serving
$22.000°
Vykee Nutrition B Complex Supplement – High-Potency B Vitamins…
Vykee NutritionAmazon.com
$0.22/serving
$26.990°
ANDREW LESSMAN High Potency B-Complex 180 Capsules - with High…
Andrew LessmanAmazon.com
$0.19/serving
$34.900°
Maximum Strength Liquid Biotin Drops w/ 12,500 MCG – Best…
Tropical OasisAmazon.com
$0.73/serving
$21.950°
Superior Source Biotin 1000 mcg. Under The Tongue Quick…
Superior SourceAmazon.com
$0.09/serving
$8.580°
Choice Bundle Spring Valley Biotin Softgels 1000mcg Dietary…
Choice BundleAmazon.com
$0.16/serving
$23.880°
BulkSupplements.com Biotin 10000mcg Softgels - Vitamin B7…
BulkSupplements.comAmazon.com
$0.06/serving
$22.970°
Superior Source Biotin 1000 mcg. Under The Tongue Quick…
Superior SourceAmazon.com
$0.14/serving
$14.210°
Life Extension Biotin 600 mcg Vitamin B7 Support Supplement…
Life ExtensionAmazon.com
$0.06/serving
$6.000°
Vitamin B Complex Gummies for Women & Men - Vitamin B12, B1…
SmildeHealAmazon.com
$0.15/serving
$8.990°
NEW AGE Vitamin B Complex Gummies with Vitamin B3, B5, B6, B7…
NEW AGEAmazon.com
$0.42/serving
$24.950°
Vitamin B-Complex Gummies for Women & Men - Vitamin B12, B1…
NUTRAHARMONYAmazon.com
$0.56/serving
$33.790°
Methylated Vitamin B Complex Gummies: 22-in-1 for Daily Energy…
BSSTABBONAmazon.com
$1.59/serving
$34.990°
NatureWise Vitamin B Complex for Women and Men - with Folic…
NatureWiseAmazon.com
$0.08/serving
$11.990°
Vitamin B Complex Capsules + Whole Food Blend of 25 Vegetables…
Peak PerformanceAmazon.com
$0.26/serving
$22.950°
Nature's Truth Biotin Gummies | 10000mcg | 50 Count | Vegan
Nature's TruthAmazon.com
$0.16/serving
$7.990°
Every Biotin (Vitamin B7) deal above is ranked by real cost per dose with no paid placement — see our and .
Independent testing
2 of 66 tracked Biotin (Vitamin B7) brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
Biotin (Vitamin B7) — dosage, safety & deals FAQ
- How much Biotin do you need per day?
There is no for biotin; the Food and Nutrition Board set only Adequate Intakes (AIs). For adults 19+ years the AI is 30 mcg/day. Pregnancy is 30 mcg/day and lactation 35 mcg/day. Infants 0-6 months need 5 mcg, children rise from 8 mcg (1-3 years) to 25 mcg (14-18 years). — per the NIH Office of Dietary Supplements; general information, not medical advice.
- Can you take too much Biotin?
The Food and Nutrition Board could not set a because there is no evidence biotin is toxic at high intakes; studies found no adverse effects of 10-50 mg/day. However, high intakes can cause falsely high or low laboratory test results, possibly leading to misdiagnosis or inappropriate patient management. — per the NIH Office of Dietary Supplements; general information, not medical advice.
- What are the signs of Biotin deficiency?
Signs typically appear gradually: thinning hair progressing to total body hair loss; scaly red rash around the eyes, nose, mouth, and perineum; conjunctivitis; ketolactic acidosis and aciduria; seizures; skin infection; brittle nails; neurological findings (depression, lethargy, hallucinations, paresthesias) in adults; and hypotonia, lethargy, and developmental delay in infants. — per the NIH Office of Dietary Supplements; general information, not medical advice.
- Who is most likely to need more Biotin?
Groups most likely to have inadequate biotin status include individuals with biotinidase deficiency (a rare disorder preventing release of free biotin), individuals with chronic alcohol exposure (which inhibits biotin absorption; 15% of people with chronic alcoholism have low plasma biotin), and pregnant and breastfeeding women (at least a third of pregnant women develop marginal deficiency). — per the NIH Office of Dietary Supplements; general information, not medical advice.
Biotin (Vitamin B7) guides
Related vitamins
References & sources
- Biotin: Fact Sheet for Health Professionals — NIH Office of Dietary Supplements
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.