How to use the injection schedule generator

Titration is a calendar problem as much as a dosing one. Four weeks at each step, a change on a specific day, a pharmacy that needs the right vial before that day. The schedule generator does the calendar part and hands it to your phone.

What it does

You give it a first injection date, an interval (7 days for the weekly agents), and a list of steps, each a dose and a number of injections at that dose. It returns every injection with its date, weekday and dose, marks the first injection of each new step, totals the drug across the plan, and exports the whole thing as an .ics file that any calendar app can import.

Templates and what they copy

Three templates load the escalation schedules from the FDA prescribing information. They copy the minimum time at each step, because that is the only number the label fixes.

• Wegovy: 0.25 mg weekly for weeks 1 to 4, then 0.5 mg, 1 mg and 1.7 mg for four weeks each, then 2.4 mg maintenance. The label permits a temporary step down to 1.7 mg if 2.4 mg is not tolerated.
• Zepbound: 2.5 mg weekly for four weeks, then 5 mg. Further increases in 2.5 mg increments after at least four weeks at the current dose, with maintenance at 5, 10 or 15 mg and a maximum of 15 mg.
• Ozempic: 0.25 mg weekly for four weeks (a starting dose, not intended for glucose control), then 0.5 mg; increases to 1 mg and then 2 mg are each permitted after at least four weeks.

Templates show four weeks of the maintenance dose so the plan has an end date. Maintenance continues as prescribed; extend the last step if you want a longer calendar.

Editing steps

Any template can be edited, and a custom plan can be built from a blank row. Common reasons to edit:

• Your prescriber held a step for six or eight weeks rather than four.
• You are on a compounded product with a schedule your prescriber set that does not match a brand label. (Compounded semaglutide and tirzepatide are not FDA approved and have no label of their own.)
• You want the schedule to start at your current step rather than from the first dose.

Editing any row switches the template selector back to "Custom" so the plan is no longer described as a label schedule.

Reading the output

The table marks step changes with a highlighted row. Those are the dates to check that the next vial or pen strength is in hand and that your prescriber has actually agreed to the increase. A highlighted row is a reminder to ask, not permission to proceed.

The total milligrams figure is useful for two things: comparing against the total drug in the vials you have (see the cost per mg guide), and noticing when a plan does not add up, for instance a 12-week plan that would need 45 mg from a 30 mg supply.

The calendar file

Each injection becomes an all-day event titled with your label and the dose, with the week number and a step-change note in the description. Events are all-day rather than timed so the reminder is not tied to a clock that may change with travel. Import the file once; if the plan changes, delete the old events and import the new file rather than editing them one by one.

What the tool will not do

It does not reschedule after a missed dose, compute a day-of-week change, or advise on tolerability. Those are label rules and prescriber decisions, and the relevant label sections are linked below. The generator is arithmetic on a start date, and it is deliberately nothing more.