Amino Acid Blends: Compare Disclosed Amounts, Not Blend Names

A label checklist for amino acid blends: individual ingredients, total blend weight, serving count, and which price metrics are possible.

Amino acid products may list several ingredients under a blend name. The total blend weight is not the amount of each amino acid, and a long ingredient list does not show a complete formula.

Separate named ingredients from disclosed quantities

Copy the amino acid names, any individual amounts, total blend weight, and serving size. If a proprietary blend gives only its total weight, mark each component amount unknown. Do not split the total equally or use ingredient order to estimate grams.

Choose a price unit the label supports

If the product discloses total amino acid grams per serving and servings per container, calculate cost per labeled gram of total amino acids. If only a proprietary blend total is given, you may calculate cost per gram of blend but should label it that way. Do not call it cost per gram of a particular amino acid.

Frequently asked questions

Can two blends with the same total weight be compared as equivalent?

No. The ingredient mix and disclosed amounts may differ.

Does a branded blend name reveal its composition?

Only the accompanying label or manufacturer’s current product specification can provide the ingredient details.

Sources and review

Sources: FDA, labeling guide for proprietary blends; NIH Office of Dietary Supplements, exercise and athletic-performance fact sheet. Reviewed September 28, 2026.

Use current SuppScan data

SuppScan presents the product data available in its catalog and does not manufacture missing values. Open the Amino acids comparison to review current offers and normalized metrics.