Biotin para Perda Capilar por Deficiência Nutricional
B Evidências Pelo menos um ensaio aleatorizado apoia esta conclusão, com resultados maioritariamente consistentes.Baseado em 10 estudos (2 RCTs) com 134 participantes no total. 6/10 estudos mostram efeitos positivos.
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B
Conclusão
Biotin may help support hair regrowth when hair loss is related to a nutritional deficiency, but the evidence is moderate and works best when an actual biotin deficiency is confirmed.
- 6 out of 10 studies show positive effects of biotin on nutritional deficiency-related hair loss
- Most supportive evidence comes from cases where biotin deficiency was confirmed through blood tests
- The total participant pool is small (134 people), so results should be interpreted with caution
- Biotin is generally well-tolerated, but may interfere with certain lab test results
Key Study Findings
Review
Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients.
Dose: None
vs: Placebo
Efeito: None
None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None
vs: Placebo
Efeito: None
None
laboratory/in vitro
26 weeks
Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line.
Dose: F1: biotin 0.5%, caffeine 2.0%, niacinamide 2.0%; F2: finasteride 0.1%, minoxidil 1.0%, tretinoin 0.
vs: Placebo
Efeito: F1 and F3 stable for 180 days; F2 stable for 14 days; F4 and F5 stable for 150 days; F6/F7 stable fo
None
RCT
n=54
12 weeks
A Comparative Study of Topical Procapil With Platelet-Rich Plasma Therapy Versus Topical Redensyl, Saw Palmetto, …
Dose: Group A: Procapil + PRP (3-week intervals, 4 sessions); Group B: Redensyl + Saw Palmetto + Biotin +
vs: Placebo
Efeito: significant difference in AGA grading score between groups (Group B superior); p < 0.05
<0.05
narrative review
Valproate-associated hair abnormalities: Pathophysiology and management strategies.
Dose: not specified
vs: Placebo
Efeito: None
None
case-control study
n=80
Biotin Deficiency in Telogen Effluvium: Fact or Fiction?
Dose: None
vs: Placebo
Efeito: None
None
Key Statistics
10
Estudos
134
Participantes
↑
Positive
B
Nota
Referenced Papers
Nutrients
2025
2 citações
International journal of …
2025
Journal of drugs …
2025
Cureus
2023
9 citações
Human psychopharmacology
2022
7 citações
The Journal of …
2020
7 citações
Comparative evaluation between two nutritional supplements in the improvement of telogen effluvium.
Other
Clinical, cosmetic and …
2018
16 citações
International journal of …
2016
89 citações
Journal of drugs …
2014
26 citações
Clinics in dermatology
2010
98 citações
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosagens Comumente Utilizadas
- general:
- 30 mcg/day
- hairloss:
- 2,500-5,000 mcg/day
Limite superior: No established UL (water-soluble)
Dosagens Estudadas em Pesquisas
| Dosagem | Duração | Efeito | N |
|---|---|---|---|
| None | -- | Mixed | -- |
| None | -- | Positive | -- |
| F1: biotin 0.5%, caffeine 2.0%, niacinamide 2.0%; F2: finasteride 0.1%, minoxidil 1.0%, tretinoin 0. | 26 weeks | Positive | -- |
| Group A: Procapil + PRP (3-week intervals, 4 sessions); Group B: Redensyl + Saw Palmetto + Biotin + | 12 weeks | Positive | 54 |
| not specified | -- | Positive | -- |
| None | -- | Neutral | 80 |
| recommended daily intake amounts; taken orally for 180 days | 26 weeks | Positive | -- |
| None | -- | Mixed | -- |
Melhor horário: With meals for better absorption
Safety & Side Effects
Efeitos Colaterais Relatados
- ⚠ May interfere with laboratory test results (troponin, thyroid panels)
- ⚠ Rare skin rashes at high doses
- ⚠ Mild gastrointestinal discomfort
- ⚠ Potential acne breakouts at doses above 5,000 mcg
Interações Conhecidas
- ● Anticonvulsants (carbamazepine, phenytoin) may reduce biotin levels
- ● Raw egg whites (avidin) bind biotin and reduce absorption
- ● Prolonged antibiotic use may deplete gut bacterial biotin synthesis
Ingestão máxima tolerável: No established UL (water-soluble)
Consulte sempre o seu profissional de saúde antes de iniciar qualquer suplemento.Sempre consulte seu profissional de saúde antes de iniciar qualquer suplemento.
Frequently Asked Questions
Does Biotin help with Perda Capilar por Deficiência Nutricional?
Based on 10 studies with 134 participants, there is moderate evidence from clinical studies that Biotin may support Perda Capilar por Deficiência Nutricional management. Our evidence grade is B (Good Evidence).
How much Biotin should I take for Perda Capilar por Deficiência Nutricional?
Studies have used various dosages. A commonly studied range is 30 mcg/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Biotin?
Reported side effects may include May interfere with laboratory test results (troponin, thyroid panels), Rare skin rashes at high doses, Mild gastrointestinal discomfort, Potential acne breakouts at doses above 5,000 mcg. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Biotin and Perda Capilar por Deficiência Nutricional?
We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 134 total participants. The overall direction of effect is positive.
Related Evidence
Outros ingredientes para Perda Capilar por Deficiência Nutricional
Biotin para outras condições
References
- [1] Andrea Sechi et al.. Nutrients. 2025. Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients. doi:10.3390/nu17091451 PubMed
- [2] Carolina Schettino Kegele et al.. Int J Pharm Compd. 2025. Personalized Compounded Hair Loss Treatments: A Compatibility Assessment of the TrichoConcept™ Vehicle Line. PubMed
- [3] Adam Leavitt et al.. J Drugs Dermatol. 2025. Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions. doi:10.36849/JDD.8763 PubMed
- [4] Pavithra Tr et al.. Cureus. 2023. A Comparative Study of Topical Procapil With Platelet-Rich Plasma Therapy Versus Topical Redensyl, Saw Palmetto, and Biotin With Platelet-Rich Plasma … doi:10.7759/cureus.38696 PubMed
- [5] Samir Kumar Praharaj et al.. Hum Psychopharmacol. 2022. Valproate-associated hair abnormalities: Pathophysiology and management strategies. doi:10.1002/hup.2814 PubMed
- [6] Sherine Hosny Abdel Rahman et al.. J Clin Aesthet Dermatol. 2020. Biotin Deficiency in Telogen Effluvium: Fact or Fiction? PubMed
- [7] Flávia Alvim Sant'Anna Addor et al.. Clin Cosmet Investig Dermatol. 2018. Comparative evaluation between two nutritional supplements in the improvement of telogen effluvium. doi:10.2147/CCID.S173082 PubMed
- [8] Ralph M Trüeb. Int J Trichology. 2016. Serum Biotin Levels in Women Complaining of Hair Loss. doi:10.4103/0974-7753.188040 PubMed
- [9] Shannon Famenini et al.. J Drugs Dermatol. 2014. Evidence for supplemental treatments in androgenetic alopecia. PubMed
- [10] Michael W Cashman et al.. Clin Dermatol. 2010. Nutrition and nail disease. doi:10.1016/j.clindermatol.2010.03.037 PubMed
Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.