Assertion: l tryptophan | /r/HasProperty | common supplemental dose
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Source sentences:
text: A long-term animal study, using a relatively modest dose of L-tryptophan (roughly the human equivalent of 1.5-3 g per day, which is a common supplemental dose), didn't lead to tryptophan side effects such as morphological changes to the liver in healthy animals (Bucci, et al., 1982).