Stack

Also known as “blend”

Last updated August 2026

Using more than one peptide together. A “blend” specifically means multiple peptides premixed in a single vial (e.g. BPC-157/TB-500), so each draw contains a fixed ratio of each.

The distinction between a self-mixed stack and a pre-blended vial matters for the math. With separate vials, each peptide is reconstituted and drawn on its own, so concentrations and unit counts are calculated independently. With a blend, the ratio is fixed by the manufacturer, so a single draw delivers both compounds at once and one of them effectively dictates the dose you can target.

Educational reference only — not medical advice. Always follow the guidance of a qualified healthcare professional.