Mega-Size BCAA 1000 Caps
by Optimum Nutrition · capsule · 400 capsules
- On the market (NIH)
- UPC 7 48927 02036 6
- DSLD label 308429
- Serving 2 capsules
- 200 servings
Mega-Size BCAA 1000 Caps by Optimum Nutrition lists 3 ingredients, 3 with an amount per serving of 2 capsules, such as 500 mg of L-leucine, 250 mg of L-isoleucine and 250 mg of L-valine. Its current label entered the NIH Dietary Supplement Label Database on December 21, 2024.
What is in Mega-Size BCAA 1000 Caps?
Each row as the label prints it, per serving of 2 capsules. 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-Leucine | 500 mg | 80% of 2,056 products listing leucine give more (median 2.5 g). | |
| L-Isoleucine | 250 mg | 83% of 1,614 products listing isoleucine give more (median 1.23 g). | |
| L-Valine | 250 mg | 84% of 1,632 products listing valine give more (median 1.25 g). |
Source: NIH ODS Dietary Supplement Label Database, label 308429 (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.
- BCAA 1000 Caps 1,000 mgON Optimum Nutrition same ingredients
- Mega-Size BCAA 1000 CapsON Optimum Nutrition same ingredients
- BCAA 1000 CapsOptimum Nutrition same ingredients
- BCAA 1000 mgNutricost · off the market same ingredients
- BCAA MicronizedSierra Fit same ingredients
- BCAA 2:1:1 1000 mgBulkSupplements.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
- Suggested Use: Consume 2 BCAA 1000 Capsules between meals, 30-45 minutes before workouts, and/or immediately after workouts.
- Warnings
- Warning: Consult your physician before using this product if you are taking medications or are under a physician's care for a medical condition. Not for use by those under the age of 18 or women that are pregnant, trying to get pregnant or nursing.
- Not for use by those under the age of 18 or women that are pregnant, trying to get pregnant or nursing.
- Storage
- Store in a cool, dry place. Contents sold by weight not volume.
Source: label statements in DSLD label 308429.
What else is on the label?
Other ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Manufactured in the USA This product contains ingredients of international and domestic origin.
How many labels does Mega-Size BCAA 1000 Caps have?
2 labels are on file under this name since September 24, 2021: other sizes, label designs and reformulations. The current one leads this page.
- Label 308429 (current) Entered December 21, 2024 · on the market · 400 capsules · UPC 7 48927 02036 6
- Label 258965 Entered September 24, 2021 · on the market · 200 capsules · UPC 7 48927 02037 3
DSLD also links this label to: Mega-Size BCAA 1000 Caps (image difference, same product), Mega-Size BCAA 1000 Caps (package size difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Optimum Nutrition (manufacturer), Aurora, IL. All Optimum Nutrition products.