5-HTP 100 mg

by Foster Regal · capsule · 60 capsules

On the market (NIH)
DSLD label 296988
Serving 1 capsule
60 servings

5-HTP 100 mg by Foster Regal lists 5 ingredients, 5 with an amount per serving of 1 capsule, such as 5 mg of niacin, 5 mg of vitamin B6, 25 mg of magnesium and 100 mg of L-5-hydroxytryptophan. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in 5-HTP 100 mg?

Each row as the label prints it, per serving of 1 capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

5-HTP 100 mg: Supplement Facts rows against the market (DSLD label 296988, January 2026 release)
Ingredient	Amount	% DV	Among products listing it
Niacinas Niacinamide	5 mg	25%	89% of 12,413 products listing niacin give more (median 20 mg). Per day at the most servings: 20 mg.
Vitamin B6as Pyridoxine Hydrochloride	5 mg	250%	51% of 15,277 products listing vitamin B6 give more (median 6 mg). Per day at the most servings: 20 mg.
Magnesiumas Magnesium Oxide	25 mg	6%	77% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 100 mg.
L-5-Hydroxytryptophanas Griffonia simplicifolia	100 mg		18% of 676 products listing 5-HTP give more (median 100 mg). Per day at the most servings: 400 mg.
Valerian	50 mg		82% of 647 products listing valerian give more (median 200 mg). Per day at the most servings: 200 mg.

Source: NIH ODS Dietary Supplement Label Database, label 296988 (entered August 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

89% of the 12,413 products that print an amount of niacin list more than its 5 mg of niacin (median 20 mg).

The NIH database records 1 to 4 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

3 products list the very same ingredients; the nearest amounts come first.

Double Strength 5-HTP L-5-Hydroxytryptophan 100 mgGood 'N Natural · off the market same ingredients
5-HTP (Griffonia Simplicifolia Extract) 100 mgWindmill same ingredients
5-Htp 100DC same ingredients
5-HTP 100 mgRadiance 5 shared, 90% alike
Serotane WellnessBIOVEA 5 shared, 90% alike
5-HTP L-5-Hydroxytryptophan 100 mgPhysioLogics · off the market 4 shared, 86% alike

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions: Directions: Start with a low dose of 1 capsule taken with a meal. Increase the dose slowly (every 3-5 days) up to a maximum of 4 capsules taken daily. Total daily intake should be divided into two or mode doses, with no more than 2 capsules per dose.
Warnings: Tamper Evident: Do not use this product if imprinted foil seal under cap is broken or missing.; Keep out of reach of children.; Warning: This product should not be taken by children, pregnant or lactating women.; May cause gastrointestinal upset, diarrhea or nausea which usually disappears by reducing dosage or is minimized by taking with food. As with any supplement, if discomfort persists discontinue use. Those suffering from gut disorders such as ulcers, irritable bowl disease, Crohn's disease, celiac disease, etc., should not use 5-HTP. Those using MAO-inhibitors, antidepressants and drugs containing fenfluramine should not use 5-HTP. May cause drowsiness. Do not use while driving or operating machinery.
Allergens and what it does not contain: Gluten Free
Storage: Keep tightly closed. Store at room temperature: 59 degrees-86 degrees F (15 degrees to 30 degrees C).

Source: label statements in DSLD label 296988.

What else is on the label?

Other ingredients: Calcium Phosphate, Gelatin, Silica, Magnesium Stearate.

How many labels does 5-HTP 100 mg have?

One label is on file, entered on August 23, 2023.

Label 296988 (current) Entered August 23, 2023 · on the market · 60 capsules

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Foster Regal Laboratories (distributor), White House, TN. All Foster Regal products.