I've been on 20mg citalopram for a little over a year now, and in the normal run of things I love it - it basically turns me into a rational human being rather than a nervous wreck.

I get my prescription filled monthly with generics, and the precise brand can vary. Normally, no harm no foul. I'm two days into a brand I haven't had before, though, and suddenly it's almost like I'm starting from scratch again. I've got the grogginess and vague nausea, and I'm pretty much unable to stay awake.

Should I contact the pharmacy? Would they be able to do anything? It's not an insurmountable problem but it's definitely a nuisance.