Short answer: there are three areas, only one real measurement, and the official picture is a line drawing, not a photograph
The official Mounjaro picture is a pair of simple body outlines, front and back, in Lilly's Instructions for Use. The accompanying text is short enough to quote in full: "You or another person can inject the medicine in your thigh or stomach (abdomen) at least 2 inches from the belly button. Another person should give you the injection in the back of your upper arm." That 2 inch clearance around the navel is the only numeric measurement in the whole illustration. There is no official photograph of a Mounjaro injection site, so every photo you find in a search is either a stock model or a stranger's skin. The diagram below redraws the official zones with the one real measurement marked, and the rest of this page says exactly what the official picture leaves out.
Two different searches use these words
Some people typing this want a map: where on the body does the needle go. Others want photos of a reaction: is this red itchy lump normal. This page is the map. If you are looking at a lump rather than planning a dose, go to Mounjaro injection site red and itchy instead, which covers what a local reaction looks like against infection and hypersensitivity.
The zones, drawn
What the official picture does not show
Most of the frustration with injection site pictures comes from expecting the illustration to answer questions it was never drawn to answer. Here is the gap, item by item.
| What people look for | Is it in the official picture? | What is actually documented |
|---|---|---|
| Distance from the navel | Yes | At least 2 inches, stated in the Instructions for Use |
| How far up or down the thigh | No | Only "thigh". Standard subcutaneous practice is the front of the thigh in the middle third between hip and knee, which is convention, not a Lilly measurement |
| How far apart two sites must be | No | No distance is given. The instruction is qualitative: use a different injection site within the area each week |
| A numbered rotation order | No | Rotation is required, the order is yours. We lay out a worked eight week cycle in the guide linked below |
| Which arm, or whether you can reach it | Implied only | The dosing sentence assigns the back of the upper arm to another person, which is the practical constraint most diagrams skip |
| Photographs of real skin | No | Lilly publishes line illustrations. No official photograph of a Mounjaro injection site exists |
Why photographs are the wrong thing to search for
Two of the pages ranking for this query today are stock photo libraries, and one that calls itself an injection sites chart contains no chart at all. That is not an accident. A photograph of an abdomen tells you nothing a line drawing does not, because the information you need is a boundary (2 inches clear of the navel) and a rule (a different spot each week), and neither is visible in a photo. Worse, a stock image shows a model with a generic syringe at whatever angle the photographer liked, which is not instruction.
The one case where a photograph genuinely helps is the other search: comparing a lump on your skin to what a typical local reaction looks like. Even there, a photo of someone else's reaction cannot diagnose yours. That topic is covered separately in the page linked above.
The part of the picture that actually changes your week
The sentence that does the real work is not about location at all. From the Instructions for Use: "Change (rotate) your injection site each week. You may use the same area of your body but be sure to choose a different injection site in that area."
That is widely misread as a requirement to move between the abdomen, the thigh and the arm. It is not. Staying in the abdomen every week is explicitly permitted. What is not permitted is using the same square inch of it. And since no site absorbs the medicine better than another, which the prescribing information settles by stating that similar exposure was achieved in the abdomen, thigh or upper arm, picking a zone is a comfort decision and the rotation inside it is the part that matters.
The diagram cannot help you there, because the hard problem is memory, not anatomy. By week five nobody reliably recalls week one.
The diagram you need is the one with last week on it
Jabby keeps a body map of where each dose went, so the next site is a decision the record makes rather than one you try to remember.
Download Jabby, free on the App StoreWhat to avoid, from the documents rather than from forums
The Instructions for Use also name what rotation is protecting you from, which most site guides omit: changing the spot within your chosen area reduces the risk of lipodystrophy, described as pits in the skin or thickened skin, and localized cutaneous amyloidosis, described as skin with lumps. That is the reason the rule exists, and it is why a diagram alone is not enough.
- Skin that has pits, is thickened, or has lumps.
- Skin that is tender, bruised, scaly or hard, and scars or damaged skin.
- The area within 2 inches of the navel.
- The same exact spot two weeks running, even within an area you are entitled to reuse.
- The injection site you used for another medicine. If you take insulin, the label says to give the two as separate injections and never to mix them, and that the same body region is acceptable but the injections should not be adjacent.
- Sharing a pen with anyone, which section 5.10 forbids even if the pen needle is changed.
Frequently asked questions
Where can I find an official picture of where to inject Mounjaro?
In the Instructions for Use published with the prescribing information by Eli Lilly, linked in the sources below. It shows a front and a back body outline with the approved areas and a short caption. It is a line illustration, not a photograph.
Where exactly do you inject Mounjaro?
The abdomen or the thigh if you are injecting yourself, keeping at least 2 inches clear of the navel. The back of the upper arm is also approved, but the label assigns that one to another person.
Is the stomach or the thigh better?
Neither absorbs better. The prescribing information states that similar exposure was achieved with injection in the abdomen, thigh or upper arm, so the choice is about comfort and reach. We go through the trade-offs and a full rotation cycle in best injection sites for Mounjaro.
How far apart should injection sites be?
No Lilly document gives a distance. The instruction is to choose a different injection site within the area each week. Any figure you see in inches is somebody's convention, not a manufacturer's measurement, so treat it that way.
Can I inject in the same place every week?
You can use the same area, such as the abdomen, every week. You should not use the same spot. The Instructions for Use are explicit about that distinction.
Are there photos of Mounjaro injection site reactions?
Not official ones, and a photograph of someone else's skin cannot tell you what yours is doing. If you have a red, itchy or swollen site, the comparison you want is the description of local reaction against infection and hypersensitivity, which is in Mounjaro injection site red and itchy.
Related reading
- Best injection sites for Mounjaro, with a worked eight week rotation built around the four doses in a KwikPen
- Mounjaro injection site red and itchy, for the other search that uses these words
- Wegovy injection sites diagram, the same exercise for semaglutide, where the zones differ
- Where to inject Ozempic, and the rotation rule most pages get backwards
- Best GLP-1 injection site for weight loss, on why site choice does not change results
- Tirzepatide injection site reaction treatment, for the same molecule under its other brand
- Tracking tirzepatide injections, for keeping the rotation on a record rather than in your head
Sources
- MOUNJARO (tirzepatide) US prescribing information and Instructions for Use, Eli Lilly and Company. Section 2.2 for the approved areas and the rotation instruction, section 12.3 for similar exposure across sites, and the Instructions for Use for the quoted site text, the 2 inch clearance and the front and back illustration. PDF version.
- MOUNJARO label on DailyMed, US National Library of Medicine, for an independently hosted copy of the same label and Instructions for Use.
- ZEPBOUND (tirzepatide) US prescribing information, Eli Lilly and Company. The same molecule under its weight management brand, with the same three approved areas, checked for consistency.
This page summarises published prescribing information and Instructions for Use for general education. The diagram is a schematic redrawing, not to scale, and it does not replace the illustration supplied with your medicine or the training your prescriber or pharmacist gives you. It is not medical advice and it contains no dosing guidance. Never start, stop or change a prescribed medicine on the basis of a web page.
Jabby is free on the App Store and keeps a body map of past injection sites so the next one is already decided.