I would confirm with your clinic. The package insert on my cetritide said to give subcutaneously but my RE actually wanted it give intramuscularly to increase the absorption.

I took it.

Goes in belly but my doctor told me that if I run out of spots to do it on my belly or if I bruise easily then I can do it into front thigh.

The needle is so small that it won’t get to your muscles - it still will be subQ injection.

I haven't been on it, but the thigh is considered an intermuscular injection while the abdomen is a subcutaneous style injection. The medicine will go in at different speeds due to that from what I understand. Call up the clinic or look at your medication insert. Maybe they have found it works better in the muscle. Good luck!