Biotin per Perdita di capelli da carenza nutrizionale
B Evidenze Almeno un trial randomizzato lo supporta, con risultati per lo più coerenti.Basato su 10 studi (2 RCTs) con 134 partecipanti totali. 6/10 studi mostrano effetti positivi.
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B
In sintesi
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
Effetto: None
None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None
vs: Placebo
Effetto: 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
Effetto: 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
Effetto: 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
Effetto: None
None
case-control study
n=80
Biotin Deficiency in Telogen Effluvium: Fact or Fiction?
Dose: None
vs: Placebo
Effetto: None
None
Key Statistics
10
Studi
134
Partecipanti
↑
Positive
B
Grado
Referenced Papers
Nutrients
2025
2 citazioni
International journal of …
2025
Journal of drugs …
2025
Cureus
2023
9 citazioni
Human psychopharmacology
2022
7 citazioni
The Journal of …
2020
7 citazioni
Comparative evaluation between two nutritional supplements in the improvement of telogen effluvium.
Other
Clinical, cosmetic and …
2018
16 citazioni
International journal of …
2016
89 citazioni
Journal of drugs …
2014
26 citazioni
Clinics in dermatology
2010
98 citazioni
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosaggi di uso comune
- general:
- 30 mcg/day
- hairloss:
- 2,500-5,000 mcg/day
Limite massimo: No established UL (water-soluble)
Dosaggi studiati nella ricerca
| Dosaggio | Durata | Effetto | 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 | -- |
Momento migliore per l'assunzione: With meals for better absorption
Safety & Side Effects
Effetti collaterali segnalati
- ⚠ 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
Interazioni note
- ● 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
Livello di assunzione massimo tollerabile: No established UL (water-soluble)
Consultare sempre il proprio medico prima di iniziare qualsiasi integratore.Consultate sempre il vostro medico prima di iniziare qualsiasi integratore.
Frequently Asked Questions
Does Biotin help with Perdita di capelli da carenza nutrizionale?
Based on 10 studies with 134 participants, there is moderate evidence from clinical studies that Biotin may support Perdita di capelli da carenza nutrizionale management. Our evidence grade is B (Good Evidence).
How much Biotin should I take for Perdita di capelli da carenza nutrizionale?
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 Perdita di capelli da carenza nutrizionale?
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
Altri ingredienti per Perdita di capelli da carenza nutrizionale
Biotin per altre condizioni
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
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