L-Serine 500 mg
by Douglas Laboratories · capsule · 60 capsules
- On the market (NIH)
- UPC 3 10539 01842 2
- DSLD label 232179
- Serving 1 capsule
- 60 servings
L-Serine 500 mg by Douglas Laboratories lists one ingredient: 500 mg of L-serine per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.
What is in L-Serine 500 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Serine | 500 mg | Higher than 54% of 314 products listing serine (median 408 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 232179 (entered August 23, 2020), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records one serving 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?
6 products list the very same ingredients; the nearest amounts come first.
- Pure L-Serine 500 MilligramsMontiff same ingredients
- Pharmaceutical Grade AjiPure L-Serine 500 mgSwanson Ultra · off the market same ingredients
- Pure L-SerinePeak Performance · off the market same ingredients
- L-Serine 500 mgNutricost same ingredients
- L-Serine 500 mg CapsulesBulkSupplements.com same ingredients
- L-Serine 500 mgSwanson same ingredients
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
- Suggested Usage: As a dietary supplement, adults take 1 capsule daily or as directed by your healthcare professional.
- Warnings
- Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
- Keep out of the reach of children.
- Use only if safety seal is intact.
- Allergens and what it does not contain
- Gluten-free, Non-GMO
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 232179.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Gelatin, Vegetable Stearate, Magnesium Silicate.
How many labels does L-Serine 500 mg have?
5 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 232179 (current) Entered August 23, 2020 · on the market · 60 capsules · UPC 3 10539 01842 2
- Label 55974 Entered January 25, 2016 · off the market May 18, 2020 · 60 capsules · UPC 3 10539 01842 2
- Label 30504 Entered February 26, 2014 · off the market December 15, 2015 · 60 capsules · UPC 3 10539 01842 2
- Label 9254 Entered June 1, 2012 · off the market July 31, 2013 · 60 capsules · UPC 3 10539 01842 2
- Label 5342 Entered February 23, 2012 · off the market January 20, 2012 · 60 capsules · UPC 3 10539 01842 2
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.