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Biotin 5000 mcg

4.8
★ ★ ★ ★ ★
(1017 ratings)
Biotin 5000 mcg
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Score81
High-dose biotin in a capsule format offers simple hair and nail support, but it has limited value without low biotin status and can interfere with important blood tests.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Nail Health
Hair Health
Skin Health

Score 81

High-dose biotin in a capsule format offers simple hair and nail support, but it has limited value without low biotin status and can interfere with important blood tests.
How scoring works
$8.37($0.13 per serving)
iHerb
$ 8.37
Amazon
$ 0.00
Vitacost
$ 8.37
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Analysis

High-dose biotin gives the product a clear, single-purpose role in keratin-related nutrition. Benefit is most plausible when intake or status is low, while extra biotin is less likely to address hair or nail concerns caused by other factors.

The capsule is easy to use, while the added calcium phosphate does not supply meaningful beauty support. No complementary protein, vitamin C, zinc, or other structural nutrients are included, so the formula remains deliberately narrow.

The smaller package is inexpensive and suitable for a limited trial. The main practical concern is laboratory-test interference, which matters even though the supplement itself is simple.

Who is it for
  • Adults seeking a simple capsule biotin supplement
  • People with low biotin intake or an identified need
Best for
  • Focused biotin supplementation
  • Capsule convenience

Pros

  • Clearly stated biotin amount
  • Simple single-purpose formula
  • Easy serving routine

Cons

  • Does not address broad hair or nail nutrition
  • High intake may offer little without low biotin status
  • Laboratory-test interference complicates use

Warnings

  • High-dose biotin can distort thyroid and hormone laboratory tests; disclose use before bloodwork.
  • Biotin can interfere with cardiac troponin tests used during urgent evaluation of chest symptoms.

Nutrient quality

76 High impact

The label lists biotin without confirming the active D-biotin isomer, and the ingredient selection is generally aligned with the intended use. The very high biotin amount exceeds ordinary needs and can interfere with some laboratory tests.

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Ingredient transparency

83 Highest impact

Every listed active has a specific amount and no proprietary blend hides the core dose. Full intake directions and a complete excipient list are not available in the supplied label data.

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Customer satisfaction

73 High impact

The aggregate rating is strong and supported by large review volume. No specific feedback was supplied to judge repeated complaints or fit with the intended use.

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Value for money

91 Highest impact

The disclosed formula and serving supply provide favorable value. Added delivery ingredients or secondary actives weaken cost efficiency.

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Report analysis

Goals

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

The high-potency dose of biotin directly supports keratin production and is well aligned with brittle-nail support. The ingredient has relevant human evidence, especially when biotin status is low.

The vegetarian capsule clearly states the active amount and keeps the formula simple. A small calcium addition contributes little to the nail goal and does not broaden structural coverage. High-dose biotin can distort some blood-test results, so use should be disclosed before testing.

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

High-potency biotin offers focused support for keratin metabolism, especially when intake is low. Evidence for improved hair in people without deficiency remains limited.

The amount is clearly disclosed, but the active biotin isomer is not confirmed. The high dose can interfere with some blood tests, so the testing clinician should be told before laboratory work.

Study evidence
Biotin Supportive 4 studies
Skin Health
Impact
Moderate effect
F Goal FitC+ Strength of SupportF CoverageB- Formula Quality

Biotin mainly supports skin when intake is deficient, and a very high amount is not known to improve normal skin further. The simple formula makes the active quantity easy to assess.

No structural, hydration, or antioxidant skin ingredient is included. High biotin intake can interfere with thyroid, hormone, and cardiac laboratory tests, so use should be disclosed before testing.

Study evidence
Biotin Supportive 10 studies

Ingredients

IngredientAmount per serving
Biotin
5000 mcg
Calcium (Dicalcium Phosphate)
125 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
Biotin · 5000 mcg OverallScore89
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

The formula is well aligned with a focused biotin supplement, providing a clearly disclosed amount in a simple vegetarian capsule. Its potency matches the intended hair and nail support range, while the label uses the general name biotin rather than confirming the biologically active d-biotin form. The cost appears favorable for the supplied dose, though the available data do not provide a full other-ingredients list.

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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 participantsHair Health Nail Health Skin Health forBiotin
  2. 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
  3. 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
  4. 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
  5. 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
  6. Brittle nails: response to daily biotin supplementation.
    Hochman LG; Scher RK; Meyerson MS · Cutis · 1993
    Case series35 participantsNail Health forBiotin
  7. 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
  8. Nail Supplements: When, How, and Why?
    Zaraa I; Richert B · Skin appendage disorders · 2026
    Narrative reviewNail Health forBiotin
  9. Brittle nails.
    Iorizzo M; Pazzaglia M; M Piraccini B; Tullo S; Tosti A · Journal of cosmetic dermatology · 2009
    Narrative reviewNail Health forBiotin
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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