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Biotin 5000

4.9
★ ★ ★ ★ ★
(552 ratings)
Biotin 5000 mcg
Product Image
Score78
5 mg of biotin offers focused support in a capsule, but extra intake may add little when status is already adequate. The active isomer is not confirmed.
How scoring works
Capsule
Quantity:60 Capsule(s) • (60 servings)
Goals:
Nail Health
Hair Health

Score 78

5 mg of biotin offers focused support in a capsule, but extra intake may add little when status is already adequate. The active isomer is not confirmed.
How scoring works
$19.79($0.32 per serving)
iHerb
$ 19.79
Vitacost
$ 19.79
Pure Formulas
$ 19.79
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Analysis

The high 5 mg serving gives focused biotin coverage in a capsule format. Biotin supports normal keratin metabolism, but visible hair or nail improvement is most plausible when inadequate intake or low status is a factor.

The label names biotin without confirming the biologically active d-biotin isomer. The focused label makes the dose simple to track. No complementary nutrients are included for broader hair, skin, or nail support.

The package provides 60 servings. The serving cost is high for an uncomplicated single ingredient. Biotin use still needs to be disclosed before laboratory testing because assay interference can create misleading results.

Who is it for
  • Adults with low biotin intake or a clinician-identified need
  • People who prefer a capsule
  • Users focused on hair health and nail health
Best for
  • Simple single-nutrient supplementation
  • Hair health support when biotin status is low
  • Nail health support when biotin status is low

Pros

  • Clearly stated 5 mg biotin amount
  • 60-serving supply
  • Simple capsule format

Cons

  • Does not confirm the d-biotin isomer
  • Evidence is limited for users with adequate biotin status
  • No complementary structural or mineral support

Warnings

  • The 5 mg biotin serving can distort thyroid, hormone, and other laboratory tests; disclose use and follow the testing clinician’s stop instructions
  • High-dose biotin can produce falsely low troponin results, so emergency clinicians should be told about its use when chest pain or cardiac testing is involved

Nutrient quality

84 Highest impact

The core active amounts are meaningful for the intended use. The active is plainly named but its d-biotin isomer is not confirmed, which leaves the main quality trade-off.

Ingredient transparency

83 Highest impact

All listed active ingredients have specific amounts and no proprietary blend hides the core formula. Complete inactive ingredients and full daily-use directions are not supplied.

Customer satisfaction

70 High impact

The aggregate satisfaction signal is strong and the supplied volume is useful. No specific experience details are provided to assess repeated complaints or purpose-related outcomes.

Value for money

70 High impact

The formula has coherent active ingredients but only moderate serving value. Similar products may offer a lower serving burden or clearer quality details.

Report analysis

Goals

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

Biotin directly supports keratin production and has useful evidence for improving brittle or splitting nails. Benefits are most likely in people with fragile nails or inadequate biotin status.

The high amount is fully disclosed, though the label does not confirm the active d-Biotin isomer. High-dose biotin can distort thyroid, hormone, and cardiac blood tests, so it should be disclosed before laboratory testing.

Study evidence
Biotin Supportive 8 studies
Hair Health
Hair Health
Impact
High effect
C+ Goal FitB+ Strength of SupportD- CoverageA- Formula Quality
Biotin · 5000 mcg

Biotin supports keratin production and is most relevant when intake or status is low. Its biological role is established, but evidence for improving hair in people without deficiency is limited.

The high biotin amount is substantial, although it may interfere with some thyroid, hormone, and cardiac laboratory tests. The amount is clear, but the label does not identify the active d-biotin isomer.

Study evidence
Biotin Supportive 4 studies

Ingredients

IngredientAmount per serving
Biotin
5000 mcg
Gluten Free Adults 18–50
Report overview
Biotin · 5000 mcg OverallScore83
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value

The capsule supplies a high biotin dose that is well aligned with the collection's intended use. The label identifies biotin clearly, though it does not confirm the biologically active isomer or disclose other ingredients here. High-dose biotin can distort some thyroid, hormone, and cardiac laboratory tests, so it should be paused when a testing professional advises.

View ingredientView products
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89 Performance

Biotin 10000 mcg

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<p>Explicit D-biotin labeling provides better form certainty than the original’s unspecified biotin form, while the 10,000 mcg amount supports concentrated use. The simple formula avoids unrelated active padding, but the dose can distort thyroid, hormone, and cardiac laboratory tests.</p>
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<p>Explicit D-biotin labeling provides better form certainty than the original’s unspecified biotin form, while the 10,000 mcg amount supports concentrated use. The simple formula avoids unrelated active padding, but the dose can distort thyroid, hormone, and cardiac laboratory tests.</p>
80 Performance

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<p>Explicit D-biotin labeling provides better form certainty than the original’s unspecified biotin form, while the 5,000 mcg amount supports concentrated use. The simple formula avoids unrelated active padding, but the dose can distort thyroid, hormone, and cardiac laboratory tests.</p>
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<p>A simple 10,000 mcg biotin formula is among the most economical available candidates, although it does not cost less per serving than the original. The biotin amount is clear, although the label does not confirm the active D-biotin form. The concentrated amount can interfere with thyroid, hormone, and cardiac laboratory tests.</p>
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Biotin 5000 mcg

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<p>A simple 5,000 mcg biotin formula is among the most economical available candidates, although it does not cost less per serving than the original. The label identifies the active D-biotin form, which improves form certainty. The concentrated amount can interfere with thyroid, hormone, and cardiac laboratory tests.</p>
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<p>A simple 10,000 mcg biotin formula is among the most economical available candidates, although it does not cost less per serving than the original. The label identifies the active D-biotin form, which improves form certainty. The concentrated amount can interfere with thyroid, hormone, and cardiac laboratory tests.</p>
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<p>A focused 5,000 mcg biotin formula offers clear dosing and a simple label, though the available candidate does not improve serving cost over the original. The biotin amount is clear, although the label does not confirm the active D-biotin form. High-dose biotin can distort several laboratory tests and is unlikely to add benefit when intake is already adequate.</p>
80 Value

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<p>A focused 5,000 mcg biotin formula offers clear dosing and a simple label, though the available candidate does not improve serving cost over the original. The biotin amount is clear, although the label does not confirm the active D-biotin form. High-dose biotin can distort several laboratory tests and is unlikely to add benefit when intake is already adequate.</p>
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<p>A focused NaN mcg biotin formula offers clear dosing and a simple label, though the available candidate does not improve serving cost over the original. The biotin amount is clear, although the label does not confirm the active D-biotin form. High-dose biotin can distort several laboratory tests and is unlikely to add benefit when intake is already adequate.</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 participantsHair Health Nail 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. 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 forBiotin
  4. 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
  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. 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
  7. Brittle nails: response to daily biotin supplementation.
    Hochman LG; Scher RK; Meyerson MS · Cutis · 1993
    Case series35 participantsNail Health forBiotin
  8. 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
  9. Nail Supplements: When, How, and Why?
    Zaraa I; Richert B · Skin appendage disorders · 2026
    Narrative reviewNail Health forBiotin
  10. Brittle nails.
    Iorizzo M; Pazzaglia M; M Piraccini B; Tullo S; Tosti A · Journal of cosmetic dermatology · 2009
    Narrative reviewNail 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