My local GP administers my 3 monthly Decapeptyl injection which I get from the local chemist. It's actually not that difficult to self inject, the instructions are pretty clear that come with the box. My urologist said that a few days either way doesn't make much difference, however my Oncolgist says that it should be injected exactly every 12 weeks not 3 monthly,
If you can get a hold of the drug I would have thought the nurse in the local doctors practice could give the injection. It's a two part drug which has to be throughly mixed before injecting. I switched from Prostap to Decapeptyl 18 months ago so I've had quite a few injections.
Stu