Tryptophan is an essential amino acid and the precursor of serotonin and melatonin levels in the body.
Unfortunately, we can consumers associated with new European regulations do not explain where this supplement can be used. You can send us email via the contact -page for advice.
L-tryptophan should not be taken by people who are treated with antidepressants.
1-3 capsules daily with plenty of water on an empty stomach to take, for example, after getting up and at bedtime, or as recommended.