DL-Phenylalanine
by DC · tablet or pill · 90 tablets
- On the market (NIH)
- DSLD label 265717
- Serving 2 tablets
- 45 servings
DL-Phenylalanine by DC lists one ingredient: 1,000 mg of phenylalanine per serving of 2 tablets. Its current label entered the NIH Dietary Supplement Label Database on April 11, 2022.
What is in DL-Phenylalanine?
Each row as the label prints it, per serving of 2 tablets. 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 |
|---|---|---|---|
| Phenylalanineas DL-PhenylalaninePhenylalanine (Form: as DL-Phenylalanine) | 1,000 mg | Higher than 91% of 611 products listing phenylalanine (median 250 mg). Per day at the most servings: 2,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 265717 (entered April 11, 2022), 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:
- Its 1,000 mg of phenylalanine is higher than 91% of the 611 phenylalanine products that print an amount; 46 list more.
The NIH database records 2 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.
- L-Phenylalanine 500 mgBIOVEA same ingredients
- DLPA 1000 mgVitamatic same ingredients
- L-PhenylalanineHerbadiet same ingredients
- Dlpa 660Earthborn Elements same ingredients
- L-Phenylalanine 500 mgVitamin World same ingredients
- L-PhenylalaninePureBulk.com 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
- Directions: As a dietary supplement, take 2 tablets 15-30 minutes before morning and evening meals.
- Warnings
- Tamper Evident: Do not use this product if imprinted foil seal under cap is broken or missing.
- Keep out of reach of children.
- Caution: If you are pregnant or nursing do not take this product.
- Phenylketonurics: Contains phenylalanine.
- 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 265717.
What else is on the label?
Other ingredients: Cellulose, Povidone, Croscarmellose, Calcium Silicate, Silica, Vegetable Magnesium Stearate.
How many labels does DL-Phenylalanine have?
4 labels are on file under this name since February 25, 2021: other sizes, label designs and reformulations. The current one leads this page.
- Label 265717 (current) Entered April 11, 2022 · on the market · 90 tablets
- Label 265716 Entered April 11, 2022 · on the market · 90 tablets
- Label 265715 Entered April 11, 2022 · on the market · 90 capsules
- Label 244486 Entered February 25, 2021 · on the market · 90 capsules
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Dee Cee Laboratories, Inc. (manufacturer), White House, TN. All DC products.