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Cheapest 5-HTP (L-5 Hydroxytryptophan) on iHerb

Ranked by real cost per 10 mg of 5-HTP (L-5 Hydroxytryptophan) — cheapest value first.

Prices updated Jul 25, 2026 · 15 products · Prices in USD

The priciest option here costs about 676.2× more per 10 mg of 5-HTP (L-5 Hydroxytryptophan) than the best-value pick NatureWise. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 10 mg
1
NatureWise, 5-HTP, 100 mg, 120 Vegetarian Capsules
NatureWise, 5-HTP, 100 mg, 120 Vegetarian Capsules
NatureWise
100 mg12012.930.011View on iHerb →
2
NatureWise, 5-HTP Plus+, 200 mg, 60 Vegetarian Capsules
NatureWise, 5-HTP Plus+, 200 mg, 60 Vegetarian Capsules
NatureWise
200 mg6017.130.014View on iHerb →
3
NutraChamps, 5-HTP, 120 Veggie Capsules
NutraChamps, 5-HTP, 120 Veggie Capsules
NutraChamps
200 mg6017.950.015View on iHerb →
4
NatureWise, 5-HTP Plus+, 200 mg, 30 Vegetarian Capsules
NatureWise, 5-HTP Plus+, 200 mg, 30 Vegetarian Capsules
NatureWise
200 mg3010.930.018View on iHerb →
5
The Vitamin Shoppe, Sleep Support, 60 Capsules
The Vitamin Shoppe, Sleep Support, 60 Capsules
The Vitamin Shoppe
250 mg3021.990.029View on iHerb →
6
Dr. Emil Nutrition, 5-HTP Plus with Co-Factor B6, 60 Capsules
Dr. Emil Nutrition, 5-HTP Plus with Co-Factor B6, 60 Capsules
Dr. Emil Nutrition
200 mg3023.690.040View on iHerb →
7
Nature's Way, 5-HTP, 60 Tablets
Nature's Way, 5-HTP, 60 Tablets
Nature's Way
100 mg3012.980.043View on iHerb →
8
HUM Nutrition, Skinny Bird, 90 Vegan Capsules
HUM Nutrition, Skinny Bird, 90 Vegan Capsules
HUM Nutrition
100 mg9040.000.044View on iHerb →
9
Carlson, Healthy Mood, 5-HTP Elite, Natural Raspberry, 60 Tablets
Carlson, Healthy Mood, 5-HTP Elite, Natural Raspberry, 60 Tablets
Carlson
100 mg3015.220.051View on iHerb →
10
Nature's Way, 5-HTP, 30 Tablets
Nature's Way, 5-HTP, 30 Tablets
Nature's Way
100 mg158.620.058View on iHerb →
11
Onnit, New Mood®, 30 Capsules
Onnit, New Mood®, 30 Capsules
Onnit
150 mg1529.950.133View on iHerb →
12
ALLMAX, Lights Out Sleep™, 60 Capsules
ALLMAX, Lights Out Sleep™, 60 Capsules
ALLMAX
50 mg3023.110.154View on iHerb →
13
SteelFit, Steel Suppress™, Appetite Suppressant, 90 Capsules
SteelFit, Steel Suppress™, Appetite Suppressant, 90 Capsules
SteelFit
100 mg3062.950.210View on iHerb →
14
Irwin Naturals, Ashwagandha Healthy Brain Mood & Stress, 60 Liquid Soft-Gels
Irwin Naturals, Ashwagandha Healthy Brain Mood & Stress, 60 Liquid Soft-Gels
Irwin Naturals
25 mg3029.990.400View on iHerb →
15
SugarbearPro, Sleep 5-HTP Amino Gummies, 32 Gummies
SugarbearPro, Sleep 5-HTP Amino Gummies, 32 Gummies
SugarbearPro
2 mg3234.997.29View on iHerb →

How we rank 5-HTP (L-5 Hydroxytryptophan)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.