On the fifth day she takes a half-teaspoonful of cystine, cysteine, d-1-methionine, l-methionine, cystine-disulfoxide, sulfonic acid or cysteic acid, the seven body sulfur .
The vital chemicals: 1) ascorbic acid (vitamin C); 2) choline, a nitrogen compound, a constituent of nerve tissue; 3) cystine, a sulfur-containing compound found in hair and .