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Biotin 5000 mcg

21st Century
4.7
★ ★ ★ ★ ★
(15415 ratings)
Biotin 5000 mcg
Product Image
Score78
A practical concentrated biotin capsule, but the unspecified form and narrow one-nutrient design cap its value.
How scoring works
Quantity:110 Capsule(s) • (110 servings)
Goals:
Nail Health
Hair Health
Skin Health

Score 78

A practical concentrated biotin capsule, but the unspecified form and narrow one-nutrient design cap its value.
How scoring works
$7.20($0.06 per serving)
Pure Formulas
$ 7.20
Walmart
$ 12.15
iHerb
$ 7.99
Amazon
$ 11.16
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Analysis

Five thousand micrograms provides concentrated biotin for users with brittle nails or a relevant nutrient gap. The simple capsule is easier to evaluate than a multi-ingredient beauty blend.

The label does not identify d-biotin, while dicalcium phosphate adds little direct support for hair, nails, or skin. The formula also leaves structural proteins, zinc, iron, vitamin D, and hydration pathways unaddressed.

The amount is lower than many extreme high-dose products but still far above daily nutritional needs. Benefits for hair or skin should not be assumed when biotin intake is already sufficient.

Who is it for
  • Adults with brittle nails
  • Users who prefer capsules
  • People addressing a biotin shortfall
Best for
  • Focused biotin use
  • Nail support
  • Deficiency-related keratin support

Pros

  • Clearly disclosed amount
  • Simple active list
  • Convenient capsule
  • Long supply

Cons

  • Biotin isomer is not confirmed
  • Calcium is not meaningfully goal-specific
  • No complementary hair or skin nutrients
  • Limited benefit is expected without deficiency

Warnings

  • The 5,000 mcg biotin amount may distort thyroid, hormone, cardiac troponin, and other blood tests; disclose use before laboratory testing.

Nutrient quality

73 High impact

The focused biotin formula provides a clearly substantial amount for targeted use. The active biotin form is not confirmed, and the concentrated dose is higher than ordinary nutritional needs.

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Ingredient transparency

80 Highest impact

Active amounts are fully disclosed without a hidden blend. Biotin form details are incomplete, 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

88 Highest impact

Serving efficiency is favorable relative to the disclosed formula. Gummy carbohydrate or low-value additions reduce value compared with cleaner alternatives.

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Report analysis

Goals

Nail Health
Nail Health
Impact
Highest effect
A+ Goal FitA Strength of SupportC- CoverageA+ Formula Quality
Biotin · 5000 mcg

Biotin directly supports keratin production and has relevant human evidence for brittle nails. The 5,000 mcg amount is firmly within a targeted nail-support range.

The exact amount is easy to verify, and the capsule lists generic biotin without confirming the active d-isomer. A small calcium amount does not materially change the nail focus. High-dose biotin can interfere with some laboratory tests, so use should be disclosed before blood work.

Study evidence
Biotin Supportive 8 studies
Calcium Supportive 1 study
Hair Health
Hair Health
Impact
High effect
B- Goal FitA- Strength of SupportF CoverageA- Formula Quality
Biotin · 5000 mcg

A targeted biotin serving may support keratin production when intake or status is low. The amount is plainly stated, although the label does not identify the active d-biotin isomer.

The focused capsule does not address iron, zinc, vitamin D, structural proteins, or other causes of weak hair and shedding. The 5,000 mcg dose may distort thyroid, hormone, and cardiac laboratory tests, so users should disclose it before testing and follow the clinician's pause instructions.

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

Biotin supports skin mainly when intake or status is inadequate, rather than acting as a broad skin-improvement ingredient. The high amount is more closely associated with hair and nail positioning than hydration or collagen support.

The 5,000 mcg amount is fully disclosed and reaches a high-potency range. High-dose biotin can distort thyroid, hormone, and cardiac laboratory results, so use should be disclosed before blood testing.

Study evidence
Biotin Supportive 10 studies

Ingredients

IngredientAmount per serving
Biotin
5000 mcg
Calcium (Dicalcium Phosphate)
 113 mg
Gluten Free Adults 18–50
Report overview
Biotin · 5000 mcg OverallScore90
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The targeted biotin dose is well aligned with hair and nail support, and its amount is easy to verify. The generic biotin listing does not confirm the active d-biotin isomer, and capsule materials are not described. The formula offers excellent dose-adjusted value, while the high biotin intake may interfere with certain laboratory tests.

View ingredientView products
Loading alternative details
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>
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 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>
81 Budget

Biotin 5000 mcg

Nature's Bounty
<p>D-biotin provides a clear active form in a simple formula. 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>
78 Budget

Biotin 5000 mcg

Nutricost
<p>The 5,000 mcg biotin amount is clearly disclosed and provides concentrated support for uses tied to low biotin status. 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 Value

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. 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

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. 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>
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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. Predictive Model of Nail Consistency Using Scanning Electron Microscopy with Energy-Dispersive X-Ray.
    Mingorance Álvarez E; Martínez Quintana R; Pérez Pico AM; Mayordomo R · Biology · 2021
    Cross-sectional study57 participantsNail Health forCalcium
  16. 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
  17. 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
  18. 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