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Cycles

Guide

Cycles

How long are peptides typically used in research? An overview of short, medium and long time windows.

Cycle lengths describe the period over which a compound is typically used in studies and research protocols. They are reference values from the literature – not a recommendation for use.

How long are peptides used?

The duration depends on the mechanism of action: compounds with a rapid-onset, short-lived effect are usually examined in research over a few weeks; compounds whose effects build up slowly (for example in metabolism or at the cellular level) over several months. Breaks between cycles are common, in order to assess effects and re-evaluate the baseline.

Short cycles

A few weeks

  • Semax10–30 days
  • Epitalon10–20 days
  • MOTS-C2–4 weeks
  • SLU-PP-3322–4 weeks
  • BPC-1574–8 weeks
  • TB-5004–6 weeks
  • DSIP2–4 weeks
Medium cycles

Two to six months

  • Ipamorelin8–16 weeks
  • CJC-12958–16 weeks
  • Semaglutide12–24 weeks
  • Tirzepatide12–24 weeks
  • Retatrutide GLP312–24 weeks
  • Tesamorelin6–12 months
Long cycles

Six months and longer

  • GHK-Cu24+ months
  • NAD+24+ months
  • KPV6–12 months

Plan the cycle, don’t guess

A cycle is only as meaningful as its documentation: start date, batch, concentration and observations belong in a protocol. The peptide calculator helps with preparation, the Protocols & Routines guide with structuring, and Storage & Stability shows how long a prepared solution remains stable over the course of a cycle.

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All information is provided solely for general, scientific and research-related information purposes. The products offered by Peptélia are not intended for human or animal consumption. This page does not constitute instructions for use, a dosing recommendation or medical advice. For health-related questions, please consult a physician or pharmacist.