Cystine consists of two molecules of cysteine (dimer) linked together by a disulphide bridge.
Some foods are rich in cystine: spirulina (662mg/100g), but also nuts (484mg/100g), calf liver (490mg/100g) or dried cod (673mg/100g).
- Cystine is used in combination with vitamin B6 to strengthen and promote nail and hair growth.
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