Wegovy injection sites: where and how
The three approved areas, rotation schedule, and what to do about lumps
Quick read · 5 min
Semaglutide (Wegovy, Ozempic) is injected once weekly into the fatty tissue just under the skin — not into muscle. There are three approved sites: abdomen (most popular), thigh, and upper arm. You must rotate between sites and shift position within each site to avoid lumps, scarring, and inconsistent absorption.
- •Three approved sites: abdomen, front of thigh, back of upper arm
- •Abdomen is the most common — avoid a 2-inch circle around the navel
- •Rotate sites every week (e.g., left abdomen → right abdomen → left thigh → right thigh)
- •Within each site, shift position by at least 1–2 inches from the last injection
- •Always inject into fatty tissue, not muscle
- •The pen needle is short (4mm) — you do not need to pinch skin in most areas
Based on clinical trials · No rankings · Every claim linked to source
The three approved injection sites
All three are FDA-approved and clinically equivalent. Most people start with the abdomen.
Abdomen (most popular)
The area at least 2 inches away from your navel in any direction. Most people inject in the lower belly, to the left or right of the navel.
- +Easiest to reach and see
- +Largest area for rotation
- +Most consistent absorption
- +Most fat tissue in most people
- –Avoid the 2-inch navel zone
- –Scar tissue from belts/waistbands can reduce absorption
- –Bruising is more visible here
Front of thigh
The upper, outer front of the thigh — roughly the area from 4 inches above the knee to 4 inches below the hip crease.
- +Large rotation area
- +Good for people with less belly fat
- +Easy to reach
- –Less fat tissue than abdomen in lean people
- –Can be slightly more painful if you hit muscle
- –Bruising may show more in shorts weather
Back of upper arm
The soft, fleshy area on the back of the upper arm between the shoulder and elbow.
- +Good third rotation site
- +Less visible bruising
- +Works well for people with fuller arms
- –Hard to reach yourself — many people need help
- –Less fat tissue in muscular arms
- –Small rotation area compared to abdomen/thigh
Rotation schedule
Rotating prevents lumps, scarring, and inconsistent absorption. Use this simple 4-week cycle.
Repeat the cycle. Within each site, shift position by 1–2 inches from the previous injection. Never inject into the exact same spot twice in a row.
Step-by-step technique
A simple walkthrough for each injection.
Clean hands reduce infection risk. You do not need to sterilise the injection site with alcohol, but you can if you prefer.
Pick a spot on your rotation schedule. Shift at least 1–2 inches from where you last injected in this area.
Take off the pen cap. Attach a new needle if your pen requires it. Do not reuse needles.
Turn the dose selector to your prescribed dose. You will hear a click for each increment.
Hold the pen at a 90° angle to the skin. Press firmly against the skin — the needle is only 4mm and goes into fat, not muscle. In most people, you do not need to pinch the skin.
Press the injection button and hold it down. Count slowly to 10 after the dose counter returns to 0. This ensures the full dose is delivered.
Pull the needle straight out. Do not rub the area. Remove the needle and put it in a sharps container. Replace the pen cap and store the pen.
Injection do's and don'ts
The most common mistakes and how to avoid them.
- •Rotate sites on a 4-week cycle (left abdomen → right abdomen → left thigh → right thigh)
- •Shift position within each site by 1–2 inches every time
- •Hold the button for a full 10-second count after the dose counter hits 0
- •Let the pen reach room temperature for 30 minutes before injecting (reduces sting)
- •Keep a simple log of which site you used and when
- •Inject at roughly the same time each week
- •Never inject into the same exact spot twice in a row
- •Never inject into muscle, scar tissue, stretch marks, or bruised areas
- •Never inject into the 2-inch zone around the navel
- •Do not inject through clothing
- •Do not rub the site after injecting (increases bruising risk)
- •Do not reuse needles — they dull after one use and increase infection risk
Troubleshooting
Common problems and what to do about them.
Why it happens: Lipohypertrophy — fatty tissue thickening from repeated injection in the same spot. Common in people who do not rotate.
What to do: Avoid that spot entirely for at least 4–6 weeks. Rotate more aggressively. The lump will usually resolve on its own. If it does not shrink after 8 weeks, mention it to your prescriber.
Why it happens: You nicked a small blood vessel under the skin. More common in the abdomen. Completely harmless.
What to do: Apply light pressure for 30 seconds after removing the needle. Do not rub. Bruising usually fades in 5–7 days. If bruising happens every time, try the thigh or arm instead.
Why it happens: Cold medication, rapid injection, or hitting a sensitive spot.
What to do: Let the pen warm to room temperature for 30 minutes. Inject slowly. Try a different area within the same site. Some people find the thigh less sensitive than the abdomen.
Why it happens: Needle removed too quickly. The dose was not fully delivered.
What to do: Hold the button down for a full slow count of 10 after the dose counter returns to 0. Keep the needle in for at least 6 seconds. A tiny droplet at the surface is normal — a stream is not.
Based on clinical trials · No rankings · Every claim linked to source
Last reviewed: March 2026