Amino Acids - Tryptophan - Source

Complex carbohydrates are an ideal source of tryptophan. Oatmeal ranks high on the list, at 16mg per gram of protein and cooked soy beans run second, at 15mg/g. And as any sleepy, serotonin-induced individual can testify after thanksgiving or Christmas dinner, turkey is also an excellent source of this amino acid.

Additional sources of tryptophan include almonds, brown rice, cottage cheese, lima beans, peanuts (not a recommended source), pumpkin seeds, sesame seeds, skim milk, soy protein.

Tryptophan is also available as part of a multi-amino acid complex and protein powder supplement. Depending on the country in which you live, tryptophan may also be available as an isolated supplement in capsule or tablet form. You may require a prescription.