PlainVitamins

DLPA DL-Phenylalanine

by AB American Biologics · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 6 90290 50803 6
  • DSLD label 20231
  • Serving 1 capsule
  • 60 servings

DLPA DL-Phenylalanine by AB American Biologics lists one ingredient: 750 mg of DL-phenylalanine per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on May 24, 2013.

What is in DLPA DL-Phenylalanine?

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).

DLPA DL-Phenylalanine: Supplement Facts rows against the market (DSLD label 20231, January 2026 release)
IngredientAmount% DVAmong products listing it
DL-Phenylalanine750 mgDL-phenylalanine in DLPA DL-Phenylalanine against 155 products750 mg per serving; the middle half of products list 135 mg to 500 mg, the median 300 mg.750 mg

Higher than 89% of 155 products listing DL-phenylalanine (median 300 mg). Per day at the most servings: 2,250 mg.

Source: NIH ODS Dietary Supplement Label Database, label 20231 (entered May 24, 2013), 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 1 to 3 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?

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: As a dietary supplement, take one (1) capsule 30 minutes before meals. Up to three (3) capsules may be taken daily, or as directed by a physician.
Warnings
Warning: Individuals with PKU (phenylketonuria) or who are pregnant or nursing should not use this product.
Keep out of reach of children.
Allergens and what it does not contain
This product is vegetarian and free of citrus, corn, egg, gluten, milk, rice, sodium, soy, wheat, yeast, added sugars, synthetic dyes, artificial flavorings and preservatives.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 20231.

What else is on the label?

Other ingredients: Vegetable Cellulose, Vegetable Stearate, Silicon Dioxide.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): AB(R).

How many labels does DLPA DL-Phenylalanine have?

One label is on file, entered on May 24, 2013.

  1. Label 20231 (current) Entered May 24, 2013 · on the market · 60 vegetarian capsules · UPC 6 90290 50803 6

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

Who makes it?

The label names American Biologics (distributor), Chula Vista, CA. All AB American Biologics products.

Where next?