PlainVitamins

Amino Complex 4400

by GNC Pro Performance · capsule · 240 capsules

  • On the market (NIH)
  • UPC 0 48107 07958 1
  • DSLD label 2715
  • Serving 8 capsules
  • 30 servings

Amino Complex 4400 by GNC Pro Performance lists 5 ingredients, 5 with an amount per serving of 8 capsules, such as 3,000 mg of L-leucine, 700 mg of L-isoleucine, 700 mg of L-valine and 200 mg of caffeine anhydrous. Its current label entered the NIH Dietary Supplement Label Database on December 23, 2011.

What is in Amino Complex 4400?

Each row as the label prints it, per serving of 8 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).

Amino Complex 4400: Supplement Facts rows against the market (DSLD label 2715, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Leucine3,000 mgLeucine in Amino Complex 4400 against 2,056 products3 g per serving; the middle half of products list 1 g to 3.5 g, the median 2.5 g.3 g

Higher than 60% of 2,056 products listing leucine (median 2.5 g).

L-Isoleucine700 mgIsoleucine in Amino Complex 4400 against 1,614 products0.7 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.23 g.0.7 g

69% of 1,614 products listing isoleucine give more (median 1.23 g).

L-Valine700 mgValine in Amino Complex 4400 against 1,632 products0.7 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.25 g.0.7 g

68% of 1,632 products listing valine give more (median 1.25 g).

Caffeine Anhydrous200 mgCaffeine in Amino Complex 4400 against 3,358 products200 mg per serving; the middle half of products list 100 mg to 275 mg, the median 200 mg.200 mg

34% of 3,358 products listing caffeine give more (median 200 mg).

Soy Peptide100 mgSoy Protein in Amino Complex 4400 against 46 products100 mg per serving; the middle half of products list 62.5 mg to 487.5 mg, the median 142.5 mg.100 mg

52% of 46 products listing soy protein give more (median 142.5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 2715 (entered December 23, 2011), 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 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?

The products whose ingredient lists overlap most with Amino Complex 4400's, rare ingredients counting for more.

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 eight capsules daily. For best results, take immediately before your workout.
Warnings
KEEP OUT OF REACH OF CHILDREN.
WARNING: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition.
Allergens and what it does not contain
No Sugar, No Starch, No Artificial Flavors, Sodium Free, No Wheat, No Gluten, No Corn, No Dairy, Yeast Free,
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 2715.

What else is on the label?

Other ingredients: Gelatin, Cellulose, Titanium Dixoide, Artificial Colors.

How many labels does Amino Complex 4400 have?

One label is on file, entered on December 23, 2011.

  1. Label 2715 (current) Entered December 23, 2011 · on the market · 240 capsules · UPC 0 48107 07958 1

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

Who makes it?

The label names General Nutrition Corporation (distributor), Pittsburgh, PA. All GNC Pro Performance products.

Where next?