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Quantity
1
What is L-Tryptophan? L-Tryptophan is an essential amino acid that cannot be synthesized in the body. Known for helping synthesize hormones serotonin and melatonin, L-Tryptophan is often used in a nighttime routine. Tryptophan is naturally f...
Reviews
4.3
9 ratings
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Works fine, but capsules are big and hard to swallow