何时服用
With food, once a day.
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氨基酸证据薄弱
L-cysteine
别名: cysteine
L-cysteine is a sulphur amino acid that the body uses to make glutathione and that builds keratin in hair and nails. You normally get it from dietary protein.
用途
- Hair and nails in combination products – weak evidence
- Glutathione production – weak evidence (NAC is better studied)
- Antioxidant support – weak evidence
剂型及区别
L-cysteine
free amino acid, often in hair formulas
NAC (N-acetylcysteine)
more stable and better-studied form
L-cystine
oxidised form, used in hair products
适合搭配
Works well with vitamin C, zinc and biotin.
不宜同服 / 需错开
Do not stack with NAC and other sulphur amino acids without checking the total dose.
注意事项
Not recommended in pregnancy or breastfeeding due to lack of data. If you have cystinuria, kidney or liver disease or take medicines, consult your doctor.
安全性
Well tolerated at usual doses; may cause digestive upset. Do not exceed the label dose.
实用建议
With hair loss, first have your iron, ferritin and thyroid checked.
含 L-cysteine 的产品 3
Glutathione + L-cysteine + Vitamin Cmixed
L-cysteine
L-cysteine 500 mgfree form · 500 mg / 片
如何理解证据评级
证据充分证据中等证据薄弱无证据
充分 = 多项高质量人体研究或官方推荐；中等 = 有前景但研究规模较小；薄弱 = 研究少或结果不一；无证据 = 说法未被证实。
您真正需要哪些补充剂？
Fénix Methode 根据您的血检结果挑选并安排服用时间——不再白花钱。
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重要提示
以上信息仅供科普，不能替代医生或药师建议，我们不提供药物剂量。补充剂不能替代均衡饮食；孕期、哺乳期、患病或服药者请先咨询医生。