生物素（Biotin） 用于 营养缺乏性脱发
B基于10项研究（2项RCT），共134名参与者。6/10项研究显示积极效果。
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B
结论
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
效果: None
None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None
vs: Placebo
效果: 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
效果: 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
效果: 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
效果: None
None
case-control study
n=80
Biotin Deficiency in Telogen Effluvium: Fact or Fiction?
Dose: None
vs: Placebo
效果: None
None
Key Statistics
10
研究数量
134
受试者
↑
Positive
B
等级
Referenced Papers
Nutrients
2025
2 次引用
International journal of …
2025
Journal of drugs …
2025
Cureus
2023
9 次引用
Human psychopharmacology
2022
7 次引用
The Journal of …
2020
7 次引用
Comparative evaluation between two nutritional supplements in the improvement of telogen effluvium.
Other
Clinical, cosmetic and …
2018
16 次引用
International journal of …
2016
89 次引用
Journal of drugs …
2014
26 次引用
Clinics in dermatology
2010
98 次引用
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
常用剂量
- general:
- 30 mcg/day
- hairloss:
- 2,500-5,000 mcg/day
上限： No established UL (water-soluble)
研究中使用的剂量
| 剂量 | 持续时间 | 效果 | 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 | -- |
最佳服用时间： With meals for better absorption
Safety & Side Effects
已报告的副作用
- ⚠ 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
已知相互作用
- ● 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
可耐受最高摄入量： No established UL (water-soluble)
在开始服用任何补充剂之前，请务必咨询您的医疗保健提供者。
Frequently Asked Questions
Does 生物素（Biotin） help with 营养缺乏性脱发?
Based on 10 studies with 134 participants, there is moderate evidence from clinical studies that 生物素（Biotin） may support 营养缺乏性脱发 management. Our evidence grade is B (Good Evidence).
How much 生物素（Biotin） should I take for 营养缺乏性脱发?
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 生物素（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 生物素（Biotin） and 营养缺乏性脱发?
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
其他成分用于 营养缺乏性脱发
生物素（Biotin） 用于其他健康状况
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