Citalopram
"With any psych med, always use the LOWEST EFFECTIVE DOSE. If your doctor starts you on 5 or 10mg and you already feel better, just stay there. Less is more. SSRIs mess with your sleep architecture and the long-term sleep deprivation will make you gradually more depressed and tired, and you might not realize it's the citalopram because it's making you too tired and stupid to figure it out. I gradually increased the dose until I was on 40mg for 2 years and my life feel apart. Most people do NOT do well on 40mg, and I'm angry that my doctor portrayed it as a moderate dose. Anything above 20mg made me too tired to function without loads of caffeine. Doctors please be more conservative in your dosing."