Injection Site Rotation Planner
Eight zones, rotated so no site gets overworked.
Next 8 weekly shots
- 1Upper-left belly
- 2Upper-right belly
- 3Lower-left belly
- 4Lower-right belly
- 5Left thigh
- 6Right thigh
- 7Left outer thigh
- 8Right outer thigh
Keep each injection at least 1 inch (2.5cm) from your last one, and let each zone rest a few weeks before returning. Rotating protects against lumps (lipohypertrophy) that make absorption unpredictable.
Why injection site rotation matters
Injecting into the same spot week after week can cause lipohypertrophy — firm lumps of built-up fatty tissue under the skin. Beyond being uncomfortable, they change how the medication absorbs, making your weekly dose less predictable. Rotating sites keeps tissue healthy and absorption consistent.
The zones nurses actually teach
The two easiest self-injection areas are the abdomen (avoiding a 2-inch radius around the navel) and the front and outer thighs. Splitting each into a few zones gives you eight rotating sites — enough that any single spot rests for weeks between injections. Keep consecutive shots at least an inch apart even within the same zone.
Make it automatic
The hard part isn't knowing to rotate — it's remembering which site you used last. The Tiro app keeps a visual torso map, records every shot, and suggests the next site automatically, so rotation happens without you having to track it on paper.
Frequently asked
- Where can I inject my weekly GLP-1 shot?
- The abdomen (at least 2 inches from the navel), the front/outer thighs, and the back of the upper arms are the standard self-injection sites. This planner rotates across abdomen and thigh zones, which are easiest to reach yourself.
- How far apart should injection sites be?
- Keep each injection at least 1 inch (2.5 cm) from your previous one, and let each broader zone rest a few weeks before returning to it. That spacing prevents tissue buildup that alters absorption.
- Does the injection site change how well the medication works?
- Reusing one spot can cause lumps (lipohypertrophy) that make absorption erratic. Rotating keeps tissue healthy and your weekly dose absorbing consistently. The sites themselves are broadly comparable when tissue is healthy.
- What if I notice a lump or hard area?
- Avoid injecting into it and give that area extended time to recover, rotating to healthy tissue. Mention persistent lumps to your prescriber or nurse. Tiro lets you flag sore or lumpy sites so the app routes around them.
Medical disclaimer. Tiro is a tracking companion, not a medical device, and nothing on this site is medical advice. Always follow the titration schedule and dosing instructions from your prescriber. Never change your dose without talking to them first.