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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

✨ AI-generated · Qwen 3.6 · methodology

L-Tryptophan is an essential amino acid precursor to serotonin and melatonin. Research suggests it may have beneficial effects on sleep quality and mood, though evidence for treating clinical depression is inconsistent.

Sleep Quality: moderate Depression: weak Mood and Anxiety: insufficient

AI-generated summary. See methodology.

Rankings

Top-Ranked Tryptophan Products

Ranked by safety score (0–100), then evidence coverage.

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

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.