L-Aspartic Acid Powder

by Source Naturals · powder · 3.53 ounces

  • On the market (NIH)
  • UPC 0 21078 00167 6
  • DSLD label 295936
  • Serving 0.25 to 0.5 tsp (1/4-1/2 Teaspoon); amounts per 0.5 tsp
  • 52 servings

L-Aspartic Acid Powder by Source Naturals lists one ingredient: 1.9 g of L-aspartic acid per serving of 0.5 tsp. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in L-Aspartic Acid Powder?

Each row as the label prints it, per serving of 0.5 tsp. 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).

L-Aspartic Acid Powder: Supplement Facts rows against the market (DSLD label 295936, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories10 Calories
L-Aspartic Acid1.9 gAspartic Acid in L-Aspartic Acid Powder against 377 products1,900 mg per serving; the middle half of products list 106 mg to 1,846 mg, the median 337 mg.1,900 mg

Higher than 76% of 377 products listing aspartic acid (median 337 mg).

Source: NIH ODS Dietary Supplement Label Database, label 295936 (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?

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?

4 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: 1/4 to 1/2 teaspoon daily between meals.
Warnings
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Suitable for vegetarians and hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 295936.

How many labels does L-Aspartic Acid Powder have?

2 labels are on file under this name since November 22, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 295936 (current) Entered August 23, 2023 · on the market · 3.53 ounces · UPC 0 21078 00167 6
  2. Label 274754 Entered November 22, 2022 · off the market July 6, 2022 · 3.53 ounces · UPC 0 21078 00167 6

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

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?