Stack
Also known as: protocol stack · peptide stack
A combination of two or more peptides used concurrently to produce additive or synergistic effects on a research target.
Stacks are built around mechanism complementarity: GHRH analog + GHS for combined somatotroph activation, BPC-157 + TB-500 for complementary repair mechanisms, Semaglutide + Cagrilintide for dual appetite pathways. A well-designed stack addresses multiple nodes in a single pathway or multiple pathways in a single outcome, producing effects that neither compound alone could match.
Badly designed stacks compound side effects without commensurate efficacy gains. Stacking two compounds with overlapping mechanism doesn't double the effect — it adds redundancy and toxicity exposure. DoseCraft's interaction checker models overlap mathematically so researchers can see stacking rationale rather than guessing.
Related Terms
Cycle
A defined period of peptide administration followed by a planned pause, structured to manage receptor sensitivity and measure effects.
Receptor Desensitization
The reduction in receptor responsiveness over time due to sustained or high-dose agonist exposure.
GHRH Analog
A synthetic peptide that mimics endogenous growth hormone releasing hormone at the GHRH receptor on pituitary somatotrophs.
Growth Hormone Secretagogue
A compound that triggers endogenous growth hormone release from the pituitary, typically by activating the ghrelin/GHS-R1a receptor.
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