Effexor and dry scalp

The more posts I read, the more I'm beginning to wonder if Effexor is causing some of my physical problems. I have DEFINITELY had the weight gain (40+lbs), low libido, horrible night sweats, very dry scalp. The vertigo went away as well as the extreme fatigue but I still sleep a lot. I remember when I first started it, however, that I almost got into a car accident because I dozed off while I was driving; when I woke up I was going 80 and was in the other lane (thank God no one else was on the road near me). I do feel somewhat better but this is a drug to use with caution in my opinion. I will be discussing weaning off of it with my dr. sooner than later.