Peptide cycle timing planner.
See on-weeks, washout weeks, and concrete dates for any of our protocol stacks — or build a custom cycle with your own ratio. The grid below renders the structure as a week-by-week timeline, and the calendar mode anchors it to real dates.
Frequently asked.
Why are washout weeks important?+
Washout periods give receptor systems and downstream pathways time to reset, reducing the risk of tolerance, desensitisation, and homeostatic compensation. Most published peptide research uses block-cycling structures rather than continuous administration for this reason — the typical pattern is 6–12 active weeks followed by 4–8 weeks off.
What washout length does this planner use?+
For the bundled protocols, the planner shows a 50% washout ratio (e.g. 8 active weeks → 4 washout weeks) which is the most-cited ratio in peptide research methodology. The custom-cycle mode lets you set any active:washout ratio you want.
Should I use the same cycle structure for every peptide?+
No. Different peptides have different mechanisms — a short-half-life secretagogue and a long-acting receptor agonist have different optimal cycle structures. The protocols here reflect the cycle length our research team has selected for each compound stack; treat custom-cycle mode as a planning aid, not a prescription.
Does cycle structure affect how I store reconstituted peptides?+
Indirectly. Most reconstituted peptides retain potency for around 30 days at 2–8°C. A short cycle (4–6 weeks) typically means a single vial covers the whole cycle once reconstituted; longer cycles may need staggered reconstitutions. See the storage & stability tool for compound-specific timing.
Is this medical advice?+
No. The planner visualises research cycle structures from published protocols and lets you plan around dates. It does not recommend doses, suggest therapeutic uses, or interpret cycle outcomes. All output is for in-vitro research planning. Consult a qualified medical practitioner for any clinical question.
This planner visualises research-cycle structures from published protocols. It does not recommend doses or therapeutic regimens. All output is for in-vitro research planning. Read the full disclaimer.