I've been on other ones where I didn't have a problem with sex drive, but had worse side effects such as hair loss (alot), weight gain, depression, etc. Estrostep was by far the worst pill ever. That was the one I lost alot of hair on. I once had very thick hair and now I have about half of it left. I've been on a host of other pills over the past 15 years off and on. Like I said, though, I'll try the Kariva if the Ovcon doesn't work out, but if that doesn't work I quit. I'm afraid to try anything else. The reason why I'm leaning more toward Kariva instead of Mircette is that I've read on other boards on the net that more people seem to have sex drive problems with Mircette as oppose to Kariva. I'll keep my fingers crossed, though, and hope I don't gain anymore weight so I don't have to switch. I lost about 35lbs. two years ago and have kept it off until now and I will not get fat again. I worked way too hard to lose it.