I started using Effexor about a week ago, instead of Prozac, on the advice of my NP. After a week on 37.5mg time release capsules, today I started the 75mg time releasers. I'm a little concerned about side effects, this seems like a huge dose to me. I'm not depressed, it's purpose is to handle the FMS pain and to control night sweats. Not sure it is helping the night sweats, had to get up and change my night shirt again last night. Sooo, anyone have comments about this drug? I took the bigger dose about an hour ago, and my head is starting to spin. This doesn't seem like a good thing at all. Dizzily, Beth.