Peptide Cycle Planner

Select a compound, injection frequency, and cycle length to generate a week-by-week injection schedule. Off-cycle breaks are included automatically. Scheduling aid only — not medical advice.

Compound / Medication

Injection frequency

Cycle start date

On-cycle duration

Off-cycle break

Total injections

over 8 weeks

On-cycle ends

Jun 22, 2026

week 8 complete

Off-cycle ends

Jul 20, 2026

4 wk break

Next cycle

Jul 20, 2026

if repeating cycle

Injection Schedule

InjectionOff-cycle

Week	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Inj.
Wk 1 Apr 27	●	●	●	●	●	●	●	7
Wk 2 May 4	●	●	●	●	●	●	●	7
Wk 3 May 11	●	●	●	●	●	●	●	7
Wk 4 May 18	●	●	●	●	●	●	●	7
Wk 5 May 25	●	●	●	●	●	●	●	7
Wk 6 Jun 1	●	●	●	●	●	●	●	7
Wk 7 Jun 8	●	●	●	●	●	●	●	7
Wk 8 Jun 15	●	●	●	●	●	●	●	7
Wk 9 Jun 22	—	—	—	—	—	—	—	—
Wk 10 Jun 29	—	—	—	—	—	—	—	—
Wk 11 Jul 6	—	—	—	—	—	—	—	—
Wk 12 Jul 13	—	—	—	—	—	—	—	—

How to Use This Planner

Pick Your Compound

Select from common presets. Each preset fills in typical injection frequency, cycle length, and off-cycle break based on common research protocols.

Adjust Frequency

Change the injection frequency if your protocol differs from the preset. Options range from twice-daily to once-weekly.

Set Cycle Length

Choose how many weeks your on-cycle lasts, and how long the off-cycle break should be. Common patterns are 8 weeks on, 4 weeks off.

Read Your Schedule

The calendar shows every week, with injection days highlighted. Off-cycle weeks are clearly marked. The summary shows total injections and key dates.

About Peptide Cycling

Why do peptide protocols use on/off cycles?

Many peptide protocols use on/off cycling to avoid receptor desensitization, tolerance development, or to manage costs. The appropriate cycle structure varies significantly by compound — GLP-1 medications like semaglutide are typically dosed continuously, while peptides like BPC-157 and TB-500 are commonly cycled. Always follow guidance from a qualified healthcare provider.

Are the presets based on research protocols?

Preset defaults are based on commonly cited research dosing schedules from published literature and community protocols. They are not clinical prescriptions. Actual protocols vary by individual, indication, and provider guidance.

What does 'EOD' (every other day) mean in practice?

Every other day means alternating injection days. In this planner, EOD starts on the first day of your cycle (Day 0 = cycle start) and injects every second day from there. This means some weeks will have 3 injections and some will have 4, depending on how the cycle start aligns with the week.

Can I use this to plan multiple compounds at once?

This planner handles one compound at a time. For multi-compound protocols, create a schedule for each compound separately and compare them. Future versions of this tool may support stacked protocol planning.

Related Tools

Use the Vial Supply Planner to calculate how many vials you need for your full cycle, and when to reorder. Use the Doctor Export to share your protocol summary with your healthcare provider.

Medical Disclaimer

This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.

Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.

No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.