Shots and pills

Log every injection or pill: dose, date and site, and why it matters.

A “shot” is a single injection. Logging shots accurately is the highest-leverage thing you can do in Tirzing: it drives your next-shot reminder, the estimated medication-level curve, and the shot-cycle phase indicator.

Logging a shot

  1. Open Shots, then Log a shot.
  2. Pick the medication and the dose you took.
  3. Set the date and time you actually injected (not when you’re logging it).
  4. Optionally choose the injection site.
  5. Save. Every shot can be edited or deleted later from the Shots list.

Pills: the Wegovy pill, Rybelsus, Foundayo

A medication you take by mouth is logged the same way, from the same page, as a dose instead of a shot. Add it from the quick-start list (Oral semaglutide covers the Wegovy pill and Rybelsus; Orforglipron covers Foundayo), or choose By mouth (pill) under How it’s taken when you add any medication.

  • There is no injection site or pain to fill in, and a pill never moves your injection-site rotation.
  • It never draws from a vial or pen, so your injectable supply stays right.
  • With no schedule set, it is due every day, and its reminder arrives close to your usual time rather than the evening before.
  • Your dashboard shows when the next dose is due instead of the injection cycle.
  • The estimated medication-level curve starts switched off for a pill, because a pill is absorbed very differently from an injection. You can switch it on from the medication’s page.

Taking a pill and an injection? Both live side by side: each has its own schedule, reminders and history.

Shots from a pen

Pick the pen under From supply. A single-dose pen is used up by one shot, so it is marked as used whatever dose you log, and the dose fills in from the pen. If you log less than the pen holds, Tirzing asks you to check before it saves. Used two or more pens for one dose? Tap Add another pen for each one so they are all marked as used.

With a KwikPen, each shot takes its dose out of the pen, and the list shows how many doses are left. If a dose finished one pen, tap Finish from another pen and the rest is taken from the next one. A dose that is not a whole number of the pen’s doses gets a quick check first.

Editing or deleting a shot puts what it used back, so a single-dose pen goes back to unused.

Why the site matters

Recording where you inject helps you rotate sites sensibly and notice whether a particular site affects how you feel or how the medication seems to absorb.

To make rotating easy, the site picker tells you where you last injected: the spot you used most recently is labeled (last location) in the drop-down, and the field shows both your last site and the suggested next one. Tirzing pre-selects the suggestion, which favors a spot you haven’t used lately on the opposite side from your last shot: you can always override it.

Rotating in your own order

Prefer the same routine every time? Go to Settings → Preferences → Shot rotation, choose Follow my order, and tap your spots in the order you use them. Use the arrows to move a step, or the × to take one out, then save.

  • Each shot you log moves the next site one step along. After the last step, the order starts over at step 1.
  • A spot can be in the order more than once, for example left abdomen, right abdomen, left abdomen, right abdomen, then a thigh.
  • Used a spot that is not in your order, say because one side was sore? Your place stays where it was, so the next shot picks up the step you skipped.
  • Your place comes from the shots you have logged, so editing or deleting a shot puts it right automatically.
  • The Shots page shows your whole order with the next step highlighted, and the shot form pre-selects it.

Switch back to Suggest for me any time. Your order is kept, so you can return to it later without building it again.

Don’t use all of them? Under Settings → Preferences → Injection sites you can switch off any built-in spot you never inject into. Switched-off spots drop out of the picker and the rotation stops suggesting them, so the list stays short and the suggestion is always somewhere you’d actually use. Shots you’ve already logged keep the site they were recorded at.

Keeping it accurate

Most people inject on a weekly cadence. If you miss a day or shift your shot, just log the real date: the predictions adjust. Guessing or skipping shots is the main thing that makes the curves and reminders drift from reality.

These guides are for using the app. They’re not medical advice: the medication-level estimates in particular are a model for personal tracking only. Talk to your clinician about your treatment.