Short Half-Life, Long Effect
BPC-157 and TB-500 clear within a day or two; the repair they trigger continues for weeks. Sermorelin clears in minutes; the growth-hormone pulse it caused does the work. Semaglutide and tirzepatide are the exception: a week-long half-life, which is why they are weekly.
By Peptide
Semaglutide and tirzepatide: about a week; fully gone in five to six weeks. GLP-1 effects on appetite fade over two to four weeks after stopping. Growth-hormone peptides: hours. BPC-157, TB-500, GHK-Cu, epitalon: a day or two. NAD+: hours, with cellular levels sustained by regular dosing.
Why It Matters
Stopping a GLP-1 means weight comes back gradually, not overnight. Stopping a GH peptide means sleep benefits fade in a week or two.
Common Questions
How long after stopping semaglutide can I get pregnant?+
Two months is the usual guidance; ask the provider.
Do peptides accumulate?+
GLP-1s do, by design; most others do not.
Can I cycle?+
Yes; see our cycling guide.
All treatments are medical services. Every guest is screened, and every treatment is provided only under the clearance, prescription or standing protocol of a licensed medical provider. Nothing on this page is a diagnosis or a promise of results. For an emergency, call 911.