I inject myself subcutaneously every week. I get it online through an NP that prescribes it and a compounding pharmacy that makes and ships it to me. It won't be hard to find any number of these companies now, but do some vetting before you choose one.
I experience nausea intermittently, most frequently during the peak levels of the drug. Every now and then, I will spontaneously vomit or even induce vomiting myself to get rid of the nausea (I am not bulimic tyvm). There are things you can do to mitigate these side effects, but like a real nurse, I'm very lackadaisical about doing things to help myself.
It limits my ability to drink very much alcohol, as that is a big vomiting trigger, but that's honestly a good thing, especially when it comes to weight loss and overall health.
It's a miracle drug as far as I'm concerned. It's as much a psychotropic drug for me as my Wellbutrin