Glossary
Placebo
Inactive substance used for comparison
A placebo is an inactive substance or procedure designed to look identical to an active treatment. It helps researchers separate effects caused by the compound itself from effects caused by expectation or participation in a study. Placebo-controlled trials compare outcomes between the active group and the placebo group.
Used in 4 research peptides
- CosmeticPalmitoyl Pentapeptide-4 (Matrixyl)Original Matrixyl peptide; signals fibroblasts to upregulate collagen I/III and fibronectin.
- MetabolicCagriSema (Cagrilintide + Semaglutide)Investigational once-weekly fixed combination of the amylin analog cagrilintide and the GLP-1 agonist semaglutide, studied in the Phase 3 REDEFINE program for weight management.
- OtherOxytocinNine-amino-acid neuropeptide hormone; FDA-approved as an injectable for obstetric use, and studied off-label as an intranasal agent for social, anxiety, and sexual-health applications with mixed results.
- RecoveryARA-290 (Cibinetide)Investigational 11-amino-acid peptide derived from the helix-B region of erythropoietin that activates the innate repair receptor without stimulating red-blood-cell production; studied for small-fiber neuropathy.
See also
Educational use only
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