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Biotin 1000 mcg

Nature's Bounty
4.7
★ ★ ★ ★ ★
(5624 ratings)
Biotin 1000 mcg
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Score80
Focused biotin dosing and a one-tablet serving are practical, but the formula helps mainly when biotin intake is low and offers no broader structural support.
How scoring works
Quantity:100 Tablet(s) • (100 servings)
Goals:
Hair Health
Skin Health

Score 80

Focused biotin dosing and a one-tablet serving are practical, but the formula helps mainly when biotin intake is low and offers no broader structural support.
How scoring works
$9.07($0.09 per serving)
iHerb
$ 10.67
Amazon
$ 9.07
Vitacost
$ 10.67
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Analysis

The high biotin amount offers a direct way to supplement vitamin B7 without an unrelated blend. Benefits are most plausible for someone whose intake or status is inadequate, so a larger number on the label is not automatically more useful.

The label identifies active d-biotin, which improves form clarity. A biotin-only formula also leaves out protein, essential fats, and minerals that can influence hair, skin, and nail quality.

The one-tablet serving and 100-serving bottle make use simple, with strong practical value. Biotin at 1,000 mcg may interfere with some laboratory tests; disclose use before blood work and follow the testing clinician's instructions.

Who is it for
  • Adults seeking a simple biotin-only supplement
  • People with an identified reason to increase biotin intake
Best for
  • Focused biotin supplementation
  • Simple one-unit daily dosing

Pros

  • Provides 1,000 mcg of biotin
  • One tablet per serving
  • 100-serving supply
  • Identifies active d-biotin

Cons

  • Single-nutrient design lacks broader support
  • Benefits may be limited when biotin status is adequate
  • Does not address protein, mineral, or fatty-acid intake

Warnings

  • Biotin at 1,000 mcg may interfere with some laboratory tests; disclose use before blood work and follow the testing clinician's instructions.

Nutrient quality

85 Highest impact

Active d-biotin provides strong form confidence. The moderate amount is focused, though beauty benefits remain uncertain when biotin status is adequate.

Ingredient transparency

84 Highest impact

The active amount is clearly disclosed without a proprietary blend. Complete use directions and non-active ingredients are not supplied.

Customer satisfaction

72 High impact

The supplied average rating is strong and the review base is very large. No review text is available to assess recurring complaints or beauty-related experiences.

Value for money

77 High impact

The moderate amount and verified active form provide good quality value. The low per serving but moderate per targeted amount cost makes the product competitive within the category.

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Goals

Hair Health
Hair Health
Impact
High effect
D+ Goal FitB Strength of SupportD- CoverageA Formula Quality
Biotin · 1000 mcg

Biotin can correct deficiency-related hair thinning, but deficiency is uncommon and 1,000 mcg has not been shown to improve hair growth in people with adequate intake. The single-vitamin formula does not address iron status, zinc, follicle structure, or hormonal shedding.

D-biotin and the exact amount are clearly identified. The high biotin amount can interfere with thyroid, hormone, and cardiac blood tests, so laboratories and clinicians need to know about its use.

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

D-biotin is clearly disclosed at 1,000 mcg and may support skin when biotin status is low. Evidence for visible skin benefits in people without deficiency is limited, so the fit is situational rather than broad.

The active is supplied in its biologically active form and without a distracting nutrient blend. The 1,000 mcg dose may interfere with thyroid, troponin, and other biotin-sensitive laboratory tests, so it should be disclosed before blood work.

Study evidence
Biotin Supportive 10 studies

Ingredients

IngredientAmount per serving
Biotin (D-Biotin)
 1000 mcg
Adults 18–50
Report overview
Biotin (D-Biotin) · 1000 mcg OverallScore65
A Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

The 1,000 mcg amount offers moderate potency and explicitly uses the active d-biotin isomer. The coated tablet is a standard delivery format, and normalized cost is weak because several servings are needed for a targeted amount. The biotin dose may interfere with some laboratory tests, so it should be disclosed before blood work.

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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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<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>
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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>
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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 forBiotin
  2. 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
  3. 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
  4. 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
  5. Biotinidase deficiency: the enzymatic defect in late-onset multiple carboxylase deficiency.
    Wolf B; Grier RE; Allen RJ; Goodman SI; Kien CL · Clinica chimica acta; international journal of clinical chemistry · 1983
    Case series5 participantsSkin Health forBiotin
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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