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L-Tryptophan

Amino acid

L-Tryptophan is usually an active ingredient: 1,942 of 1,950 products list it that way, and 9 list it as a filler. A typical serving holds about 100 mg; half of products give between 50 mg and 406 mg.

No clinical evidence for L-Tryptophan yet

Browse the supplements we do have evidence for

Dose per serving from products

1,195 products in our catalogue print how much L-Tryptophan a serving holds.

Most common: 50 mg to 100 mg, 22% of 1,195 products.

Dose per servingProducts
5 mg or less
49
5 mg to 10 mg
27
10 mg to 25 mg
77
25 mg to 50 mg
192
50 mg to 100 mg
264
100 mg to 250 mg
198
250 mg to 500 mg
233
500 mg to 1 g
107
over 1 g
48

Products that contain L-Tryptophan

1,950 in our catalogue.