◆ Latest: Retatrutide Phase 3 trial reports 24% weight reduction at 48 wks◆ Established: 10 peptides now FDA approved for metabolic indications◆ Preclinical: BPC-157 meta-analysis (17 rodent studies) published◆ Evidence: new mitochondrial peptide review covers MOTS-c, SS-31, Humanin◆ Safety: hCG supply disruption update, Q2 2026◆ Editorial: The Mitochondrial Decade, new long-read◆ Latest: Retatrutide Phase 3 trial reports 24% weight reduction at 48 wks◆ Established: 10 peptides now FDA approved for metabolic indications◆ Preclinical: BPC-157 meta-analysis (17 rodent studies) published◆ Evidence: new mitochondrial peptide review covers MOTS-c, SS-31, Humanin◆ Safety: hCG supply disruption update, Q2 2026◆ Editorial: The Mitochondrial Decade, new long-read

Definition

Small Molecule

A low-molecular-weight (<900 Da) organic compound, the chemical class most conventional drugs belong to. Distinguished from peptides and proteins by being synthesized from scratch rather than built from amino acids. Most small molecules can be taken orally and cross cell membranes. Tadalafil, rapamycin, and MK-677 are small molecules that appear in this database because they're discussed alongside peptides.

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This site is for educational and research purposes only. It does not constitute medical advice. Always consult a qualified healthcare provider before using any peptide or supplement.