depression
"Worked extremely quickly for me and had a strong effect on a low dose. Was on it for 8 months with bearable side effects. Transformed my life for the better; more energy, better focus, more positive thinking, more socially inclined. 

Saved my life when I needed it but had side effects for me including: constipation, bloating and gas (all day every day), and occasionally a jittery feeling or increased anxiety. 

I had to stop taking it because it caused high blood pressure for me. None of the doctors believed that citolopram was the cause of my unusual high blood pressure (I'm young, active, and thin) but I tapered off the medication and my blood pressure went from stage 2 high blood pressure (really really scary high) to completely normal."