Planning · settings saved on this device
Injection Schedule Planner
Pick ester, dose and frequency. Get a calendar, a peak-to-trough curve and a phone reminder file.
Everything you enter is saved only in this browser. Nothing is sent to a server.
Peak is scaled to 100. Swing is the trough as a share of the peak. Steady state is taken as five half-lives, the standard pharmacokinetic rule of thumb.
Show injection dates
How This Works
Each injection adds a dose that decays exponentially with the ester's half-life. The planner stacks those decays at your interval and plots the sum, then rescales so the steady-state peak reads 100. Shorter intervals flatten the curve; longer ones deepen the trough. That shape is the whole point of the tool.
Steady state is shown as five half-lives, the point where a repeated dose has reached about 97 percent of its final level. For cypionate that is about 40 days, for enanthate about 23 days.
The calendar simply counts forward from your first date at your interval, and the .ics file writes one event per date with a reminder. No dose logic is involved beyond printing the number you typed.
Frequently Asked Questions
Is the curve a prediction of my blood level?
Which half-lives does the planner use?
Does this tool recommend a dose?
How do the phone reminders work?
Is my schedule saved?
Sources
- Bhasin S et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(5):1715-1744
- DailyMed, Depo-Testosterone (testosterone cypionate injection) prescribing information
- DailyMed, Xyosted (testosterone enanthate injection) prescribing information
- DailyMed, Aveed (testosterone undecanoate injection) prescribing information