半胱胺酸:好處、用途和副作用

General instructions

Cysteine ​​is a non-essential amino acid that is important in metabolic functions for making proteins and other substances. It is found in beta-keratin. This is the main protein in nails, skin and hair. Cysteine ​​is important for making collagen. Affects skin elasticity and texture. Cysteine ​​has antioxidant properties.

Molecular formula C3H7N O2S

Molecular weight 121.16 g/mol

CAS 52-90-4

(EC) No. 200-158-2

unsubstantiated claims

There may be benefits that haven't been proven by research.

A type of cysteine ​​called L-cysteine ​​may help treat arthritis and hardened arteries. It may help treat certain lung conditions. These include bronchitis, emphysema, and tuberculosis.

Cysteine ​​may play a role in the normal rate of hair growth. Cysteine ​​may also help reduce the effects of aging on the skin. It may help with healing after surgery or burns and protect the skin from radiation damage.

Cysteine ​​may help burn fat and increase muscle mass.

Recommended intake

Amino acids (AA) are available as single AAs or as combinations of AAs. They also come as part of a multivitamin, protein and food supplement. Dosage forms include tablets, liquids and powders.

By getting enough protein in your diet, you can get all the amino acids you need.

There are no conditions that increase your need for cysteine.

Side Effects, Toxicity, and Interactions

Using single amino acid supplements may result in a negative nitrogen balance. This can reduce metabolic effects. It makes your kidneys work harder. In children, single amino acid supplements may cause growth problems.

Do not take high doses of a single amino acid for a long time.

Do not use cysteine ​​supplements if you are pregnant or breastfeeding.

Do not use cysteine ​​if you have any of the following conditions:

  • diabetes. Cysteine ​​may interfere with the action of insulin.

  • Cystinuria. This is a rare genetic disease. It causes a build-up of cystine. Cystine is related to cysteine. This buildup can lead to kidney stones, which block the urinary tract.

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