Tryptophan

What is Tryptophan?

Trytophan is an essential amino acid to humans, and is the precursor to serotonin via the intermediate amino acid, 5-Hydroxytryptophan (or 5-HTP). The serotonin can then be converted to melatonin. Both of these chemicals are useful because serotonin is an anti-depressant, and melatonin assists in quality sleep.

Where to Buy Tryptophan Cheap:

Product NameSizeLowest PriceMain Ingredient / DollarGo to Cheapest Store
Doctor's Best L-Tryptophan90 Capsules2.65 Grams of L-Tryptophan per dollarGo to best deal on Doctor's Best L-Tryptophan 90 Capsules
Source Naturals L-Tryptophan Capsules120 Capsules2.25 Grams of L-Tryptophan per dollarGo to best deal on Source Naturals L-Tryptophan Capsules 120 Capsules
Source Naturals L-Tryptophan Capsules60 Capsules2.17 Grams of L-Tryptophan per dollarGo to best deal on Source Naturals L-Tryptophan Capsules 60 Capsules
Source Naturals L-Tryptophan Capsules30 Capsules1.81 Grams of L-Tryptophan per dollarGo to best deal on Source Naturals L-Tryptophan Capsules 30 Capsules