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Biotin

4.6
★ ★ ★ ★ ★
(2359 ratings)
Biotin 2500 mcg
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Score82
A well-identified d-biotin softgel with a more measured high-potency dose, though it remains a narrow deficiency-focused tool.
How scoring works
Quantity:120 Softgel(s) • (120 servings)
Goals:
Nail Health
Hair Health
Skin Health

Score 82

A well-identified d-biotin softgel with a more measured high-potency dose, though it remains a narrow deficiency-focused tool.
How scoring works

Also available as

2 options
5000mcg • 120 Softgel(s) servings B7 5000 mcg • 120 Softgel(s) • 120 servings $17.95 ($0.14 per serving) 10000mcg • 120 Softgel(s) servings B7 10000 mcg • 120 Softgel(s) • 120 servings $19.95 ($0.16 per serving)
$16.95($0.14 per serving)
iHerb
$ 18.97
Amazon
$ 16.95
iHerb
$ 18.97
Report prices

Analysis

Active d-biotin is clearly identified and supplied at a targeted amount for keratin support. The softgel format may be easy to take and avoids the added carbohydrate found in gummies.

Nail support is the most direct fit, while hair and skin outcomes are most plausible when low biotin status is the underlying issue. The formula does not address collagen, protein, minerals, vitamin D, or scalp-related factors.

The amount is lower than many competing high-dose products yet still greatly exceeds ordinary requirements. Users should consider the blood-test interaction even at this lower concentrated serving.

Who is it for
  • Adults seeking d-biotin
  • People with brittle nails
  • Users preferring a softgel
Best for
  • Active-form biotin supplementation
  • Nail keratin support
  • Correcting inadequate biotin intake

Pros

  • Uses active d-biotin
  • Dose is fully disclosed
  • Lower than many extreme high-dose products
  • No gummy carbohydrate

Cons

  • Still far above nutritional needs
  • Single-pathway formula
  • Limited evidence for hair improvement without deficiency
  • Does not address structural or mineral needs

Warnings

  • The 2,500 mcg biotin amount can interfere with thyroid, hormone, cardiac troponin, and other laboratory tests; disclose use before blood work.

Nutrient quality

86 Highest impact

The focused biotin formula provides a clearly substantial amount for targeted use. D-biotin is identified, and the concentrated dose is higher than ordinary nutritional needs.

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Ingredient transparency

85 Highest impact

Active amounts are fully disclosed without a hidden blend. D-biotin is specifically named, and the supplied information omits full directions and inactive ingredients.

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Customer satisfaction

71 High impact

The supplied average is strong and rests on a large review count. No review text was provided to check recurring complaints or product-specific experiences.

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Value for money

85 Highest impact

Serving efficiency is reasonable relative to the disclosed formula. A focused active list supports value compared with cleaner alternatives.

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Report analysis

Goals

Nail Health
Nail Health
Impact
Highest effect
A Goal FitA Strength of SupportD+ CoverageA+ Formula Quality
Biotin · 2500 mcg

Biotin directly supports keratin production and has relevant human evidence for brittle nails. The 2,500 mcg amount is firmly within a targeted nail-support range.

The exact amount is easy to verify, and the active d-biotin form and liquid vegetable softgel are clearly identified. High-dose biotin can interfere with some laboratory tests, so use should be disclosed before blood work.

Study evidence
Biotin Supportive 8 studies
Hair Health
Hair Health
Impact
High effect
B- Goal FitA- Strength of SupportD CoverageA+ Formula Quality
Biotin · 2500 mcg

D-biotin directly supports normal keratin metabolism and is most useful when biotin intake is inadequate. Evidence for thicker hair in people without deficiency is limited.

The liquid softgel provides an appropriate form at a substantial amount. Biotin can interfere with thyroid, hormone, and cardiac troponin tests, so it should be disclosed before blood work.

Study evidence
Biotin Supportive 4 studies
Skin Health
Skin Health
Impact
Moderate effect
F Goal FitB- Strength of SupportF CoverageA- Formula Quality

D-biotin is biologically appropriate, but high-dose biotin has little evidence for improving normal skin without deficiency. The product does not address structure, hydration, or oxidative defense.

The simple softgel is easy to assess yet narrowly and weakly aligned with skin goals. A 2,500 mcg amount can interfere with thyroid, hormone, and cardiac troponin laboratory tests, so it should be disclosed before blood work.

Study evidence
Biotin Supportive 10 studies

Ingredients

IngredientAmount per serving
Biotin (D-Biotin)
 2500 mcg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
Biotin (D-Biotin) · 2500 mcg OverallScore84
A+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyD+ Value

Active d-biotin in a liquid vegetable softgel provides a clean, biologically appropriate form. The clearly labeled amount sits in a useful mid-strength range for hair and nail support without reaching the highest-dose tier. Value is moderate after normalizing for dose, and biotin at this level may interfere with some laboratory tests, so it should be disclosed before blood work.

View ingredientView products
Loading alternative details
89 Performance

Biotin 10000 mcg

California Gold Nutrition
<p>Explicit d-biotin labeling, a very high amount, and a simple softgel provide excellent form quality and cost efficiency for focused hair and nail supplementation. Compared with the original, the clearly stated dose and focused formula improve assessment, but concentrated biotin is most relevant when intake is inadequate and can distort thyroid, hormone, or cardiac tests.</p>
84 Performance

Biotin 5000 mcg

Spring Valley
<p>The high biotin amount uses the active d-biotin isomer and provides focused support mainly when biotin intake is inadequate. Compared with the original, the clearly stated dose and focused formula improve assessment, but concentrated biotin is most relevant when intake is inadequate and can distort thyroid, hormone, or cardiac tests.</p>
84 Performance

High Potency Biotin 5 mg

Country Life
<p>A specific active form and 5,000 mcg d-biotin support confident assessment of the core formula. Compared with the original, the clearly stated dose and focused formula improve assessment, but concentrated biotin is most relevant when intake is inadequate and can distort thyroid, hormone, or cardiac tests.</p>
83 Budget

Biotin 5000 mcg

Lake Avenue Nutrition
<p>The clearly disclosed high biotin amount fits focused hair and nail supplementation, but the label does not confirm the active d-biotin isomer. Compared with the original, the simpler formula offers lower or closely comparable serving cost, though biotin at supplemental amounts should be disclosed before blood work because it can distort laboratory results.</p>
84 Budget

Biotin 5000 mcg

Spring Valley
<p>The high biotin amount uses the active d-biotin isomer and provides focused support mainly when biotin intake is inadequate. Compared with the original, the simpler formula offers lower or closely comparable serving cost, though biotin at supplemental amounts should be disclosed before blood work because it can distort laboratory results.</p>
83 Budget

Biotin 5000 mcg

Doctor's Best
<p>5,000 mcg biotin provides a clearly quantified core formula, though the active is plainly named but its d-biotin isomer is not confirmed. Compared with the original, the simpler formula offers lower or closely comparable serving cost, though biotin at supplemental amounts should be disclosed before blood work because it can distort laboratory results.</p>
84 Value

Biotin 10000 mcg

Nature's Bounty
<p>The very high biotin amount uses the active d-biotin isomer and provides focused support mainly when biotin intake is inadequate. Clear dosing, a streamlined formula, and favorable serving economics make it a stronger value than the original, although concentrated biotin does not assure hair, skin, or nail benefits without low biotin status.</p>
84 Value

Biotin 10000 mcg

Spring Valley
<p>The very high biotin amount uses the active d-biotin isomer and provides focused support mainly when biotin intake is inadequate. Clear dosing, a streamlined formula, and favorable serving economics make it a stronger value than the original, although concentrated biotin does not assure hair, skin, or nail benefits without low biotin status.</p>
83 Value

Biotin 5000 mcg

Carlson
<p>5,000 mcg biotin provides a clearly quantified core formula, though the active is plainly named but its d-biotin isomer is not confirmed. Clear dosing, a streamlined formula, and favorable serving economics make it a stronger value than the original, although concentrated biotin does not assure hair, skin, or nail benefits without low biotin status.</p>
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. The Role of Sesbania grandiflora-Derived Biotin and Bambusa arundinacea-Derived Silica Extracts in Promoting Hair, Skin, and Nail Health: A Randomized, Double-Blind, Placebo-Controlled Clinical Study.
    Patel MN; Maheshvari J; Patel N · Cureus · 2025
    Randomized trial105 participantsSkin Health Hair Health Nail Health forBiotin
  2. Anti-pollution cosmetic-based one-step formation of w/o/w multiple emulsion containing D-biotin for skin protection: fabrication and in vitro and in vivo evaluation.
    Ali A; Iqbal S; Ilyas A; Khan H; Asad MHHB; Fatima N; Akhtar N · Drug delivery and translational research · 2020
    Non-randomized trial15 participantsSkin Health forBiotin
  3. Interventions for infantile seborrhoeic dermatitis (including cradle cap).
    Victoire A; Magin P; Coughlan J; van Driel ML · The Cochrane database of systematic reviews · 2019
    Systematic review35 participants2 studies pooledSkin Health forBiotin
  4. Final report on the safety assessment of biotin.
    Fiume MZ; Cosmetic Ingredient Review Expert Panel · International journal of toxicology · 2002
    Narrative reviewSkin Health forBiotin
  5. The Infatuation With Biotin Supplementation: Is There Truth Behind Its Rising Popularity? A Comparative Analysis of Clinical Efficacy versus Social Popularity.
    Soleymani T; Lo Sicco K; Shapiro J · Journal of drugs in dermatology : JDD · 2018
    Narrative reviewHair Health forBiotin
  6. Vitamins A, B, C, and D: A Short Review for the Dermatologist.
    Coerdt KM; Goggins CA; Khachemoune A · Alternative therapies in health and medicine · 2021
    Narrative reviewHair Health forBiotin
  7. Low serum biotinidase activity in children with valproic acid monotherapy.
    Schulpis KH; Karikas GA; Tjamouranis J; Regoutas S; Tsakiris S · Epilepsia · 2001
    Clinical trial125 participantsHair Health Skin Health forBiotin
  8. Biotin for the treatment of nail disease: what is the evidence?
    Lipner SR; Scher RK · The Journal of dermatological treatment · 2018
    Narrative reviewNail Health forBiotin
  9. Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy.
    Colombo VE; Gerber F; Bronhofer M; Floersheim GL · Journal of the American Academy of Dermatology · 1991
    Other32 participantsNail Health forBiotin
  10. Brittle nails: response to daily biotin supplementation.
    Hochman LG; Scher RK; Meyerson MS · Cutis · 1993
    Case series35 participantsNail Health forBiotin
  11. Nail Supplements: When, How, and Why?
    Zaraa I; Richert B · Skin appendage disorders · 2026
    Narrative reviewNail Health forBiotin
  12. Brittle nails.
    Iorizzo M; Pazzaglia M; M Piraccini B; Tullo S; Tosti A · Journal of cosmetic dermatology · 2009
    Narrative reviewNail Health forBiotin
  13. Treatment of brittle nail with a hydroxypropyl chitosan-based lacquer, alone or in combination with oral biotin: A randomized, assessor-blinded trial.
    Chiavetta A; Mazzurco S; Secolo MP; Tomarchio G; Milani M · Dermatologic therapy · 2020
    Randomized trial50 participantsNail Health forBiotin
  14. Vitamins and minerals: their role in nail health and disease.
    Scheinfeld N; Dahdah MJ; Scher R · Journal of drugs in dermatology : JDD · 2007
    Narrative reviewNail Health forBiotin
  15. Evaluation of biophysical skin parameters and hair changes in patients with acne vulgaris treated with isotretinoin, and the effect of biotin use on these parameters.
    Aksac SE; Bilgili SG; Yavuz GO; Yavuz IH; Aksac M; Karadag AS · International journal of dermatology · 2021
    Non-randomized trial60 participantsSkin Health forBiotin
  16. Generalized seborrhoeic dermatitis. Clinical and therapeutic data of 25 patients.
    Messaritakis J; Kattamis C; Karabula C; Matsaniotis N · Archives of disease in childhood · 1976
    Non-randomized trial25 participantsSkin Health forBiotin
  17. Holocarboxylase synthetase deficiency: novel clinical and molecular findings.
    Tammachote R; Janklat S; Tongkobpetch S; Suphapeetiporn K; Shotelersuk V · Clinical genetics · 2010
    Case series4 participantsSkin Health forBiotin