Tryptophan
Optimal dose 100-500 mg/day
Tryptophan is critical for production of serotonin, which is important for sleep and is also called the "happiness molecule" as serotonin decreases depression. Unfortunately, the law limits what can be added to supplements.
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Nutritional primer
We have a 20,000 word primer on nutrition at our website that provides more detail with study references on each nutrient. Click here to visit the "Tryptophan" section of our primer.