Cost per serving
$0.08
Cheap·−76%vitamin · 73 active deals
Every Vitamin B7 deal here is ranked by cost per dose— what you actually pay per serving, not the sticker price. Forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Right now the best value across our full Vitamin B7 catalog is at $0.05 per serving.
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.
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.
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 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.
The Food and Nutrition Board was unable to establish a Tolerable Upper Intake Level (UL) for biotin because there is no evidence in humans that it is toxic at high intakes, and several studies found no adverse effects of 10–50 mg/day. However, high biotin intakes — and potentially even intakes greater than the AI — can cause clinically significant falsely high or falsely low laboratory test results that may lead to misdiagnosis or inappropriate patient management; the FDA has noted that a patient died after a biotin-skewed troponin test gave a falsely low result — per the NIH Office of Dietary Supplements.
Cost per serving
$0.08
Cheap·−76%Cost per serving
$0.13
Cost per serving
$0.06
Cheap·−82%Cost per serving
$0.07
Cheap·−77%Cost per serving
$0.09
Avg·−65%Cost per serving
$0.10
Avg·−59%Cost per serving
$0.30
PriceyCost per serving
$0.17
Avg·−32%Cost per serving
$0.45
Cost per serving
$0.09
Avg·−70%Cost per serving
$0.10
Avg·−60%Cost per serving
$0.14
Avg·−39%Cost per serving
$0.15
Avg·−38%Cost per serving
$0.19
Cost per serving
$0.16
Avg·−32%Cost per serving
$0.07
Cheap·−78%Cost per serving
$0.29
PriceyCost per serving
$0.14
Avg·−40%Cost per serving
$0.05
Cheap·−83%Cost per serving
$0.24
PriceyCost per serving
$0.29
Cost per serving
$0.13
Avg·−43%Cost per serving
$0.20
PriceyCost per serving
$0.05
Cheap·−83%HerbsPro · 💇 Vitamin B7
CPS
Price
$4.55
HerbsPro · ⚙️ Chromium
CPS
Price
$8.05
HerbsPro · 💇 Vitamin B7
CPS
Price
$5.81
HerbsPro · 💇 Vitamin B7
CPS
Price
$8.75
HerbsPro · 💇 Vitamin B7
CPS
Price
$5.59
HerbsPro · 💇 Vitamin B7
CPS
Price
$12.24
HerbsPro · 💇 Vitamin B7
CPS
Price
$17.99
HerbsPro · 💇 Vitamin B7
CPS
Price
$4.95
HerbsPro · ⚡ Alpha-Lipoic Acid
CPS
Price
$27.00
HerbsPro · 💇 Vitamin B7
CPS
Price
$10.33
HerbsPro · 💇 Vitamin B7
CPS
Price
$9.05
HerbsPro · 💇 Vitamin B7
CPS
Price
$28.79
HerbsPro · 💇 Vitamin B7
CPS
Price
$17.83
HerbsPro · ⚙️ Chromium
CPS
Price
$11.64
HerbsPro · 💇 Vitamin B7
CPS
Price
$16.39
HerbsPro · 💇 Vitamin B7
CPS
Price
$4.26
HerbsPro · 💇 Vitamin B7
CPS
Price
$17.59
HerbsPro · 💇 Vitamin B7
CPS
Price
$14.07
HerbsPro · 💇 Vitamin B7
CPS
Price
$10.85
HerbsPro · 💇 Vitamin B7
CPS
Price
$14.19
HerbsPro · ⚡ Alpha-Lipoic Acid
CPS
Price
$17.50
HerbsPro · 💇 Vitamin B7
CPS
Price
$13.49
HerbsPro · 💇 Vitamin B7
CPS
Price
$11.87
HerbsPro · 💇 Vitamin B7
CPS
Price
$6.42
Dosage, upper-limit, deficiency and interaction facts are sourced from the NIH Office of Dietary Supplements Vitamin B7 fact sheet. General information, not medical advice.