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Biotin 5000 mcg

Nutricost
4.8
★ ★ ★ ★ ★
(216 ratings)
Biotin 5000 mcg
Product Image
Score78
A focused, long-supply biotin softgel with clear potency but incomplete form disclosure and little relevance beyond one nutrient pathway.
How scoring works
Quantity:150 Softgel(s) • (150 servings)
Goals:
Nail Health
Hair Health

Score 78

A focused, long-supply biotin softgel with clear potency but incomplete form disclosure and little relevance beyond one nutrient pathway.
How scoring works
$13.95($0.09 per serving)
Vitacost
$ 13.95
iHerb
$ 13.95
Vitacost
$ 13.95
Walmart
$ 13.95
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Analysis

The concentrated biotin amount is directly relevant to keratin production and may help brittle nails when status is low. A softgel with one active is straightforward to assess and use.

The label does not identify d-biotin, and the dose far exceeds ordinary nutritional requirements. Evidence for hair growth in people with adequate biotin is weak, while iron, zinc, protein, and vitamin D pathways are not addressed.

The large supply may appeal to established users who understand the product's narrow role. Blood-test interference should be treated as the main practical safety issue.

Who is it for
  • Adults with brittle nails
  • Users who prefer softgels
  • People addressing low biotin status
Best for
  • High-potency biotin use
  • Nail keratin support
  • Deficiency correction

Pros

  • Clear biotin amount
  • Simple formula
  • Long supply
  • No gummy carbohydrate

Cons

  • Does not verify d-biotin
  • No complementary structural nutrients
  • Hair benefit is uncertain without deficiency
  • Dose exceeds nutritional needs

Warnings

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

Nutrient quality

76 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

64 Moderate impact

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

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Value for money

91 Highest impact

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

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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 when biotin status is low, and the 5,000 mcg amount matches a concentrated nail formula. Evidence for improving brittle nails is supportive but comes from limited human studies and is most relevant when deficiency or fragility is present.

The amount is clearly disclosed, although the label does not verify the biologically active d-biotin isomer. High-dose biotin can distort thyroid, hormone, and cardiac troponin laboratory tests, so its use should be disclosed before blood work.

Study evidence
Biotin Supportive 8 studies
Hair Health
Hair Health
Impact
Moderate effect
D- Goal FitD+ Strength of SupportF CoverageA- Formula Quality
Biotin · 5000 mcg

Biotin can correct hair changes caused by deficiency, but evidence for improving hair growth in people with adequate status is weak. The 5000 mcg amount greatly exceeds nutritional needs without establishing a stronger hair effect.

The single-active format is simple and clearly disclosed. High-dose biotin can distort thyroid, hormone, and cardiac troponin blood tests, so it should be stopped as directed before laboratory testing.

Study evidence
Biotin Supportive 4 studies

Ingredients

IngredientAmount per serving
Biotin
5000 mcg
Gluten Free Adults 18–50
Report overview
Biotin · 5000 mcg OverallScore93
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

The 5,000 mcg serving matches the target range commonly used for hair and nail support, and the amount is clearly disclosed. A softgel offers a clean, convenient delivery format, although the label does not verify the biologically active d-biotin isomer. High-dose biotin can interfere with certain laboratory tests, so the testing provider should be told about its use before blood work.

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

21st Century
<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 participantsHair Health Nail Health forBiotin
  2. 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
  3. 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
  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. 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
  6. 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
  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