Best Tryptophan Supplements (2026)

Ranked by safety score and evidence coverage from 0 independent research sources

80 Products Analyzed

0 Research Sources

99 Avg Safety Score

41% Evidence-Backed

What the Research Says

L-Tryptophan is an essential amino acid and a precursor to serotonin, primarily studied for its role in regulating sleep, mood, and the kynurenine pathway. Research indicates potential benefits for sleep quality and mood regulation, though evidence regarding its efficacy as a standalone treatment for depression is mixed.

Sleep: moderate Depression: moderate Mood and Anxiety: weak Gut Health: weak

AI-generated summary based on 0 research sources. See methodology.

Top-Ranked Tryptophan Products

Products ranked by safety score (0–100), then evidence coverage. Higher is better.

#	Product	Safety	Evidence	Form
1	5-HTP L-5-Hydroxy Tryptophan 200 mg Vitamin World	100	100%	Capsule
2	5-HTP L-5-Hydroxy Tryptophan 100 mg Vitamin World	100	100%	Capsule
3	5-HTP L-5-Hydroxy Tryptophan 100 mg Vitamin World	100	100%	Capsule
4	5-HTP L-5-Hydroxy-Tryptophan 200 mg Puritan's Pride	100	100%	Capsule
5	Hydroxy Tryptophan New Sun	100	100%	Capsule
6	Best L-Tryptophan 500 mg Doctor's Best	100	66%	Capsule
7	NeuroAmino-SP (K-44) Apex Energetics	100	66%	Capsule
8	Sleep Guard Capsules Perque	100	57%	Capsule
9	Sleep Guard Capsules Perque	100	57%	Capsule
10	Sleep Terra Origin	100	57%	Capsule
11	Healthy Sleep & Wake Terra Origin	100	57%	Capsule
12	L-Tryptophan 500 mg Advanced Nutrition by Zahler	100	50%	Capsule
13	L-Tryptophan 1,000 mg Source Naturals	100	50%	Tablet or Pill
14	5-HTP L-5-Hydroxy-Tryptophan 100 mg Puritan's Pride	100	50%	Capsule
15	5-HTP L-5-Hydroxy-Tryptophan 100 mg Puritan's Pride	100	50%	Capsule
16	Sleep Kion	100	33%	Capsule
17	Sleep Optimizer Jarrow Formulas	100	33%	Capsule
18	Dream Catcher Rebalance	100	28%	Lozenge
19	L-Tryptophan 500 mg Source Naturals	100	25%	Tablet or Pill
20	Extreme Instant EAA Cherry Flavour Body Attack	100	13%	Powder

Showing top 20 of 80 products. View all products →

How We Rank

Products are ranked by safety score (0–100), which considers UL exceedance, unsupported health claims, and proprietary blend disclosure. Products with equal safety scores are then sorted by evidence coverage — the percentage of ingredients backed by Tier-A or Tier-B research.

Safety scores are computed from product label data (DSLD) cross-referenced with 0 research sources. See our Editorial Policy for full methodology.