I personally tried daily IM and daily subq. I tried every dose from 100mg/week to 200mg/wk split into daily doses. I tried once a week injections, twice a week injections and everything in between. For some reason, the libido was always missing. Everything else was awesome. Mentally I felt great, energy was good, slept great....just was always missing that one part. I really don't know why libido seemed to dissappear with injections but it seems to be the one thing many people on here have the same issue with. Pellets seem to fix the libido which is why i went back to them. I'd much rather inject since it's so easy and convenient, but I couldn't do with the libido any longer.