Nervous system and sleep
Cyclic Glycine-Proline
Cyclic dipeptide investigated in relation to the IGF-1 system.
Search names: cGP
Evidence
Catalogue entry · see sources
Describes the linked sources, not an overall score for product quality or effectiveness.Half-life
Vital: ~4 h
Transcribed from the recorded catalogue; experimental conditions are not always specified in the value field.Half-life, duration of effect and shelf life are different measures. Catalogue values may differ between variants and administration routes. Curves continue to use their stated statistics reference.
Adverse effects and limitations
Adverse effects are not fully mapped in this entry. Consult the sources for the specific compound and use.
Sources and further reading
Vital · user-supplied screen recordings, 1 Nov 2026
Find researchPubMed · Cyclic Glycine-Proline↗Research information, not a personal dosing plan. Last reviewed: 2026-11-01.