GLP-1 injection sites: where to inject and why rotation matters

If you have just started a weekly GLP-1 medication, two questions come up fast: where exactly does the shot go, and does it matter if you use the same spot every week? Here is the short version, plus a rotation habit that takes ten seconds to maintain.

The three usual sites

• Abdomen. The most common choice — stay at least 5 cm (2 inches) away from the navel.
• Front of the thigh. The upper outer area, easy to reach one-handed.
• Back of the upper arm. Effective, but usually easier with help from someone else.

All three are subcutaneous — into the fat layer just under the skin, not into muscle. Your prescriber and the leaflet in the box are the authority on which sites apply to your specific medication and pen.

Why rotation matters

Injecting into the same square of skin week after week can cause lipohypertrophy — thickened, rubbery tissue under the skin. Beyond looking and feeling odd, that tissue absorbs medication unevenly, which makes the effect of a dose less predictable. Rotating gives each site weeks to recover.

A rotation plan you will actually follow

Divide the abdomen into four quadrants and work around them clockwise: upper-left this week, upper-right next, then lower-right, then lower-left. Once you have been round the clock, switch to the thighs for a cycle. The only rule that matters is that you never inject into the same centimetre two weeks running.

Keep the record where you can see it

Rotation only works if you remember where you were last time — and week five is when memory starts inventing things. GLP-1 Shot Tracker : OneShot logs each injection with its site and dose, reminds you when the next one is due, and keeps weight and progress on the same clean timeline, so the whole history is one screen away at your next appointment.

Missed a dose?

Do not guess and do not double up. Every GLP-1 product has its own rule for how late is too late, and your prescriber's instruction is the one that counts. A dated log makes that conversation trivial: you can say exactly when the last dose was rather than trying to reconstruct it.

This article is general information about injection technique, not medical advice. Always follow the instructions from your doctor, pharmacist and the leaflet supplied with your medication.

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