Amino acids
5-HTP
A substance made from the seeds of an African plant. Your body turns it into serotonin, a brain messenger linked to mood and sleep.
61 products from US online stores, sorted by what 100 mg of 5-HTP costs – not by the price per pack.
6.4¢Lowest cost
per 100 mg 5-HTP
- Prices checked Nov 1, 2026, US
- No paid placements
What does 100 mg mean?
- 5-HTP per serving in most of the products we checked
- 50–200 mg5-HTP per serving in most of the products we checked
- 100 mg is about one serving: half of the 61 products we checked have up to 100 mg per serving, the other half more.
- There’s no official daily amount for 5-HTP.
We compare by 100 mg only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 61 products score
- Very good 90+: 0
- Good 75+: 61
- Fair 60+: 0
- Low under 60: 0
- have no seal from an independent testing program
- 100%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 7 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 100 mg. Pick a size above to compare packs that are alike.
61 products · cheapest per 100 mg 5-HTP first
- Rank 1
Nutricost
5-HTP, Unflavored
Powder
85Good qualityPacked in USA6.4¢per 100 mg
Lowest
- Pack
- $15.9525 g (0.9 oz)83 servings
- 5-HTP per serving
- 300 mgin 0.3 g
- Pack lasts
- 250 daysif you take 100 mg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Amazing Nutrition
Amazing Formulas 5-HTP - 200 Mg
Capsules
80Good qualityMade in USA7.1¢per 100 mg
11% more
- Pack
- $16.99120 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Best Naturals
5-HTP 200 mg
Capsules
80Good qualityMade in USA7.1¢per 100 mg
11% more
- Pack
- $16.99120 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 mg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Best Naturals
5-HTP, 200 mg
Capsules
80Good qualityMade in USA7.2¢per 100 mg
12% more
- Pack
- $17.20120 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Nutricost
5-HTP Powder
Powder
85Good qualityCountry not stated7.2¢per 100 mg
13% more
- Pack
- $17.9783 servings
- 5-HTP per serving
- 300 mg
- Pack lasts
- 249 daysif you take 100 mg a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Nutricost
5-HTP, 200 mg
Capsules
85Good qualityCountry not stated7.5¢per 100 mg
17% more
- Pack
- $17.95120 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Nutricost
5-HTP, 100 mg
Capsules
85Good qualityMade in USA8.3¢per 100 mg
30% more
- Pack
- $19.95240 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Amazing Nutrition
Amazing Formulas 5-HTP - 100 Mg
Capsules
80Good qualityMade in USA8.3¢per 100 mg
30% more
- Pack
- $9.99120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Amazing Nutrition
Amazing Formulas 5-HTP - 100 Mg
Capsules
80Good qualityCountry not stated8.3¢per 100 mg
31% more
- Pack
- $19.99240 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (100 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
PEScience
5-HTP 200mg
Capsules
80Good qualityCountry not stated8.3¢per 100 mg
31% more
- Pack
- $19.99120 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (200 mg) a day
pescience.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Nutricost
5-HTP, 200 mg
Capsules
85Good qualityMade in USA$0.11per 100 mg
69% more
- Pack
- $12.9560 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Best Naturals
5-HTP 100 mg
Capsules
80Good qualityMade in USA$0.12per 100 mg
82% more
- Pack
- $13.96120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
Vitacost
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.12per 100 mg
85% more
- Pack
- $14.18120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Healthy Origins
5-HTP
Capsules
80Good qualityCountry not stated$0.12per 100 mg
96% more
- Pack
- $14.99120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Doctor's Best
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.13per 100 mg
100% more
- Pack
- $22.99180 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Doctor's Best
5-HTP 100 mg
Capsules
80Good qualityCountry not stated$0.13per 100 mg
100% more
- Pack
- $22.99180 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (100 mg) a day
drbvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
Nutricost
5-HTP, 200 mg
Capsules
85Good qualityMade in USA$0.13per 100 mg
109% more
- Pack
- $7.9930 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Toniiq
5-HTP 99%+
Capsules
80Good qualityCountry not stated$0.14per 100 mg
117% more
- Pack
- $24.9790 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (200 mg) a day
toniiq.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Sundance Vitamins
5-HTP 100mg
Capsules
80Good qualityCountry not stated$0.14per 100 mg
119% more
- Pack
- $6.9950 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 50 daysif you take 1 capsule (100 mg) a day
sundancevitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
NOW Foods
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.14per 100 mg
119% more
- Pack
- $16.79120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Swanson Vitamins
5-HTP, Maximum Strength, 200 mg
Capsules
80Good qualityCountry not stated$0.14per 100 mg
119% more
- Pack
- $16.7960 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
Swanson Vitamins
5-HTP - Maximum Strength
Capsules
80Good qualityCountry not stated$0.14per 100 mg
119% more
- Pack
- $16.7960 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Swanson Vitamins
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.14per 100 mg
122% more
- Pack
- $8.4960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Swanson Vitamins
5-HTP - Extra Strength
Capsules
80Good qualityCountry not stated$0.14per 100 mg
122% more
- Pack
- $8.4960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Vitacost
Root2, 5-HTP, 200 mg
Tablets
80Good qualityCountry not stated$0.15per 100 mg
130% more
- Pack
- $8.7930 tablets
- 5-HTP per serving
- 200 mgin 1 tablet
- Pack lasts
- 30 daysif you take 1 tablet (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Best Naturals
5-HTP 50 mg
Capsules
80Good qualityMade in USA$0.15per 100 mg
135% more
- Pack
- $8.99120 capsules
- 5-HTP per serving
- 50 mgin 1 capsule
- Pack lasts
- 60 daysif you take 2 capsules (100 mg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
California Gold Nutrition
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.16per 100 mg
144% more
- Pack
- $9.3460 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
Vitacost
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.16per 100 mg
158% more
- Pack
- $9.8960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Doctor's Best
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.17per 100 mg
161% more
- Pack
- $9.9960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
NOW Foods
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.17per 100 mg
161% more
- Pack
- $9.9960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Doctor's Best
5-HTP 100 mg
Capsules
80Good qualityCountry not stated$0.17per 100 mg
161% more
- Pack
- $9.9960 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
drbvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Vitacost
Root2, 5-HTP, 100 mg
Tablets
80Good qualityCountry not stated$0.18per 100 mg
178% more
- Pack
- $7.9845 tablets
- 5-HTP per serving
- 100 mgin 1 tablet
- Pack lasts
- 45 daysif you take 1 tablet (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
NOW Foods
5-HTP, Citrus, 100 mg
Tablets
80Good qualityMade in USA$0.19per 100 mg
198% more
- Pack
- $17.1390 tablets
- 5-HTP per serving
- 100 mgin 1 tablet
- Pack lasts
- 90 daysif you take 1 tablet (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Toniiq
5-HTP
Capsules
80Good qualityCountry not stated$0.19per 100 mg
199% more
- Pack
- $34.2990 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (200 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
NOW Foods
5-HTP, 50 mg
Capsules
80Good qualityCountry not stated$0.20per 100 mg
217% more
- Pack
- $18.18180 capsules
- 5-HTP per serving
- 50 mgin 1 capsule
- Pack lasts
- 90 daysif you take 2 capsules (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
Nutricost
5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.22per 100 mg
240% more
- Pack
- $6.5030 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
NOW Foods
5-HTP, 50 mg
Capsules
80Good qualityCountry not stated$0.24per 100 mg
283% more
- Pack
- $11.0190 capsules
- 5-HTP per serving
- 50 mgin 1 capsule
- Pack lasts
- 45 daysif you take 2 capsules (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
ProHealth Longevity
5-HTP Extra Strength - 200 mg
Capsules
85Good qualityCountry not stated$0.25per 100 mg
292% more
- Pack
- $29.9960 capsules
- 5-HTP per serving
- 200 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (200 mg) a day
prohealth.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Source Naturals
Serene Science, 5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.27per 100 mg
325% more
- Pack
- $32.55120 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Source Naturals
Serene Science, 5-HTP, 100 mg
Capsules
80Good qualityCountry not stated$0.29per 100 mg
348% more
- Pack
- $17.1560 capsules
- 5-HTP per serving
- 100 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (100 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 1,154%more per 100 mg for the most expensive product than for the cheapest.
- Fact
- 130%more per 100 mg for the cheapest tablets than for the cheapest powder.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us