GLP-1 Shot Tracker: Log Every Weekly Injection & Site

01

What to log the moment you take your shot

The best time to record an injection is the 20 seconds right after you take it, while the details are exact. Capture these five fields every week:

Only the first three are essential. Logged consistently, they answer the two questions that trip people up most: "When is my next shot due?" and "Where do I inject this week?"

02

Injection sites and how to rotate them

There are three approved subcutaneous areas for common GLP-1 pens: the abdomen (staying at least two inches / ~5 cm away from the navel), the front or outer thigh, and the back of the upper arm. Injecting into the same spot week after week can cause lipohypertrophy — firm, lumpy tissue that changes how the medicine absorbs and can blunt its effect.

The fix is to rotate across zones so each area recovers before you return to it.

A simple, reliable pattern treats left and right versions of each area as separate sites, giving you six landing spots to cycle through:

• Week 1 — left abdomen
• Week 2 — right abdomen
• Week 3 — left thigh
• Week 4 — right thigh
• Week 5 — left upper arm (or back of arm with help)
• Week 6 — right upper arm, then repeat

The catch is memory: after a month, nobody reliably recalls "was it left thigh or right arm last time?" This is exactly where a tracker earns its keep — a good app shows a body map with your last few sites highlighted, so you always pick a fresh one instead of guessing.

For the clinical detail behind why rotation matters, see the deep dive on injection-site rotation and lipohypertrophy prevention.

03

Missed a shot? The rule depends on your drug

This is the number-one reason to timestamp every injection. The manufacturers publish specific missed-dose windows, and they differ by medicine.

Because your tracker knows the exact date and time of your last shot, it can tell you at a glance which rule applies.

This is the US FDA label wording.

The EU and many other countries' Wegovy leaflets say: take the missed dose within 5 days of the day you missed, otherwise skip it — check the leaflet in your own country and your prescriber.

Never take two shots at once to "catch up." If you miss two or more consecutive weekly doses, contact your prescriber — you may need to reinitiate at a lower dose to limit nausea.

Always follow your own product's label and your clinician's instructions; a shot tracker simply makes the date easy to check.

The full protocol lives in the missed-dose timing guide.

04

How to build a 60-second weekly shot routine

You do not need a complicated system — you need a repeatable one. Here is a routine that takes about a minute a week:

1. Set a recurring weekly reminder for a consistent day and time, so a missed shot never sneaks up on you.
2. Prep and inject into the next site your rotation calls for, at least ~5 cm from the navel if using the abdomen.
3. Log it immediately — tap the date, the dose in mg, and the body-map zone you just used.
4. Note any reaction (redness, leaking, a bent needle) so a pattern is visible over time.
5. Confirm the next due date the app shows, and check its missed-dose window is set for your specific drug.
6. Glance at the body map before next week so the upcoming site is already obvious.

05

How a GLP-1 shot tracker app automates all of this

Doing the six steps by hand works, but a weekly repeating event is exactly what an app is built for. A good GLP-1 shot tracker turns the routine into a few taps and gives you back certainty:

• Weekly injection reminders tied to your chosen day, with a due-date countdown.
• A visual injection-site body map that highlights recent sites so rotation is never a guess.
• An automatic missed-dose check that applies your drug's specific 2-, 4-, or 5-day rule.
• A timestamped shot history you can hand to your clinician as a clean adherence record.
• Reaction notes that surface site problems (recurring lumps, leaks) early.

HAVIT brings your shot log together with weight, body-composition, food and protein tracking in one wellness app — so the injection event lives alongside the daily habits that actually protect your results.

If you want your dose reminders, your shot history and your habits in the same place, it is a natural home for your GLP-1 journey. Curious how it stacks up against dedicated tools?

Compare options in our best GLP-1 tracker apps roundup.

Safety basics for any GLP-1 log. Don't use these medicines if you or a close relative has had medullary thyroid cancer, or if you have MEN 2.

They are not used during pregnancy — tell your prescriber right away if you become pregnant or plan to, because some must be stopped weeks to months beforehand.

If you also take insulin or a sulfonylurea, watch for low blood sugar (shakiness, sweating, confusion).

Vomiting or diarrhea that keeps you from holding down fluids can dehydrate you and strain your kidneys — call your clinician.

A tracker organizes your records; the package leaflet in your country and your prescriber come first.

06

Why HAVIT — Medication + Behavior Change, in One App

GLP-1 medications can meaningfully reduce weight — but the number on the scale is only part of the story.

The lean-mass share of the weight lost on GLP-1 therapy has ranged from 40–60% in some trials to 15% or less in others — and lean mass counts organs, bone and fluid, not only muscle (Neeland et al., Diabetes, Obesity and Metabolism, 2024), and results tend to fade once the medication stops unless new habits take their place.

That's why leading guidance treats medication as one part of care, not the whole: the U.S. Preventive Services Task Force recommends that adults with obesity be offered intensive, multicomponent behavioral interventions (USPSTF, Grade B).

HAVIT is built for exactly this moment — one app that unites medication tracking, body composition, nutrition and protein, daily habit-building, and an AI coach that adapts to you.

Across our own 1,090 GLP-1 users, the most consistent trackers built the strongest habits (see the GLP-1 habit report).

Manage the medicine and the muscle — together. Start with HAVIT →

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