PlainVitamins

Lysine 400

by ProCaps Laboratories · capsule · 360 easy-to-swallow capsules

  • On the market (NIH)
  • UPC 141232
  • DSLD label 320143
  • Serving 1 capsule
  • 360 servings

Lysine 400 by ProCaps Laboratories lists one ingredient: 400 mg of L-lysine per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on December 21, 2024.

What is in Lysine 400?

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).

Lysine 400: Supplement Facts rows against the market (DSLD label 320143, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Lysineas L-Lysine Hydrochloride400 mgLysine in Lysine 400 against 1,250 products400 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.400 mg

56% of 1,250 products listing lysine give more (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 320143 (entered December 21, 2024), 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?

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.

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 Use Consume one capsule daily. You can increase your intake based upon your needs and as guided by your health care provider.
Allergens and what it does not contain
Contains no additives or common allergens Contains no milk, soy, yeast, corn, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens, genetically modified (GMO) ingredients or manufacturing additives.

Source: label statements in DSLD label 320143.

What else is on the label?

Other ingredients: Gelatin.

How many labels does Lysine 400 have?

7 labels are on file under this name since January 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 320143 (current) Entered December 21, 2024 · on the market · 360 easy-to-swallow capsules · UPC 141232
  2. Label 275266 Entered October 24, 2022 · on the market · 360 easy-to-swallow capsules · UPC 141232
  3. Label 220391 Entered May 22, 2020 · off the market February 4, 2022 · 360 easy-to-swallow capsules · UPC 141232
  4. Label 69483 Entered January 25, 2017 · off the market April 2, 2020 · 360 easy-to-swallow capsules
  5. Label 57355 Entered March 24, 2016 · off the market December 16, 2016 · 360 easy-to-swallow capsules
  6. Label 30058 Entered February 26, 2014 · off the market January 26, 2016 · 360 easy to swallow capsules
  7. Label 4744 Entered January 25, 2012 · off the market January 1, 2012 · 360 easy to swallow capsules

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

Who makes it?

The label names ProCaps Labs (manufacturer), Henderson, NV. All ProCaps Laboratories products.

Where next?