I've been on Celexa for probably 4 years now. I definitely have noticed some side effects - it slows down weight loss
and decreases sexual appetite
I am on 50mg a day, at bedtime. In the beginning doctors had a hard time determining the right dose for. Apparently 50 is a weird number - my doctor is writing a paper on the affects of certain drugs and overweight people - how dosing is key - and my case will be listed. I had a hard time determining the right time to take the meds - in the am it made me sleepy, at night it kept me up. We decided night time was best, but to help me sleep they also put me on a drug called tryptophan - it works in conjunction with the celexa. I was on the tryp for about a year when they took me off. I sleep well on my own now even with the celexa.
I hope this story helps someone. Please give it the 4 weeks it needs to build up in your blood and stable off. Even if you miss a dose, the chemical is still in your body, still doing it's job - so even if you felt ok without a dose, don't stop taking it. It's changed my life, and made me bearable to the ones I love.