Vitamin A 用于 Scalp Inflammation (Folliculitis & Dermatitis)
DBased on 4 studies with 1 total participants. 3/4 studies show positive effects.
<\/script>\n`;
},
get iframeSnippet() {
const domain = 'haircited.com';
const params = 'ingredient\u003Dvitamin\u002Da\u0026condition\u003Dscalp\u002Dinflammation';
return ``;
},
get activeSnippet() {
return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet;
},
copySnippet() {
navigator.clipboard.writeText(this.activeSnippet).then(() => {
this.copied = true;
setTimeout(() => { this.copied = false; }, 2000);
});
}
}"
@keydown.escape.window="open = false"
@click.outside="open = false">
D
结论
Based on 4 studies with 1 total participants. 3/4 studies show positive effects.
Key Study Findings
Review
Vitamins A, B, C, and D: A Short Review for the Dermatologist.
Dose: None
vs: control
Outcome: None
效果: None
None
研究人群: patients with uncombable hair syndrome
Case report
n=1
20 weeks
Combined Diet and Supplementation Therapy Resolves Alopecia Areata in a Paediatric Patient: A Case Study.
Dose: Multi-nutrient supplement, zinc sulfate, fish oil with vitamin D; diet rich in vitamins A and D, zin
vs: Placebo
效果: Complete remission within 5 months
None
narrative_review
Nutrition and skin: Kids are not just little people.
Dose: None
vs: Placebo
效果: narrative review; discusses role of nutrition from prenatal period on skin immune responses; highlig
not_applicable
Review
Retinoids putting the "a" in alopecia.
Dose: None
vs: None
Outcome: Vitamin A role in alopecia development
效果: None
None
研究人群: Patients with alopecia (theoretical)
Key Statistics
4
研究数量
1
受试者
↑
Positive
D
等级
Referenced Papers
Alternative therapies in …
2021
10 次引用
Combined Diet and Supplementation Therapy Resolves Alopecia Areata in a Paediatric Patient: A Case Study.
Case Report
Cureus
2020
5 次引用
Clinics in dermatology
2016
19 次引用
The Journal of …
2013
10 次引用
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
常用剂量
- general:
- 700-900 mcg RAE/day (2,300-3,000 IU)
上限： 3,000 mcg RAE/day (10,000 IU preformed vitamin A)
研究中使用的剂量
| 剂量 | 持续时间 | 效果 | N |
|---|---|---|---|
| None | -- | Positive | -- |
| Multi-nutrient supplement, zinc sulfate, fish oil with vitamin D; diet rich in vitamins A and D, zin | 20 weeks | Positive | 1 |
| None | -- | Positive | -- |
| None | -- | Negative | -- |
最佳服用时间： With a fat-containing meal; consult your healthcare provider about appropriate dosage
Safety & Side Effects
已报告的副作用
- ⚠ Hair loss at excessive doses (hypervitaminosis A)
- ⚠ Dry skin and lips
- ⚠ Headache and nausea at high doses
- ⚠ Teratogenicity — contraindicated in pregnancy at high doses
已知相互作用
- ● Retinoid medications (isotretinoin, tretinoin — additive toxicity risk)
- ● Tetracycline antibiotics (increased intracranial pressure risk)
- ● Anticoagulants (high-dose vitamin A may increase bleeding risk)
- ● Hepatotoxic drugs (additive liver stress at high doses)
可耐受最高摄入量： 3,000 mcg RAE/day (10,000 IU preformed vitamin A)
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 Vitamin A help with Scalp Inflammation (Folliculitis & Dermatitis)?
Based on 4 studies with 1 participants, there is preliminary evidence that needs more research that Vitamin A may support Scalp Inflammation (Folliculitis & Dermatitis) management. Our evidence grade is D (Very Early Research).
How much Vitamin A should I take for Scalp Inflammation (Folliculitis & Dermatitis)?
Studies have used various dosages. A commonly studied range is 700-900 mcg RAE/day (2,300-3,000 IU). Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Vitamin A?
Reported side effects may include Hair loss at excessive doses (hypervitaminosis A), Dry skin and lips, Headache and nausea at high doses, Teratogenicity — contraindicated in pregnancy at high doses. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Vitamin A and Scalp Inflammation (Folliculitis & Dermatitis)?
We rate the evidence as Grade D (Very Early Research). This rating is based on 4 peer-reviewed studies with 1 total participants. The overall direction of effect is positive.
Related Evidence
其他成分用于 Scalp Inflammation (Folliculitis & Dermatitis)
Vitamin A 用于其他健康状况
FDA 免责声明: 这些声明未经美国食品药品监督管理局（FDA）评估。本网站上的产品和信息无意用于诊断、治疗、治愈或预防任何疾病。所展示的证据等级基于我们对已发表的同行评审研究的分析，不构成医疗建议。在开始任何补充剂方案之前，请务必咨询您的医疗保健提供者。