I'm on dulaglutide atm and have been since April which is a once weekly injection to stomach or upper thighs.
They come in empipen style single use injection, where you press a button on top and is spring loaded so does it all itself once placed on skin, found this helps me as you don't see needle and is extremely quick.
As far as side effects, had very little personally, upset stomach maybe about time when I was due my next injection for first 4 weeks then seemed to calm down but nothing drastic I'd say.
Found it very hard to lose weight and think that it's helped me a lot managing this as makes me feel fuller even after a small meals but have noticed of late not being as full as I was when i started the injection so not sure if my body has adpted to it over time but still don't feel need to snack as before, lost 14kg so just over 2 stone and been able to at very least maintaine my weight even when going away and not eating maybe as I should be.
Have changed my diet and cut out carbs as well as exersise so hard to tell what is drug and what is lifestyle change but helps me feel fuller for longer for sure.
overall has helped me, hope this helps and hope all works out for you
All the best