I am on my 5th day of citalopram. I currently am taking 10mg but was prescribed 20mg, but the doctor told me I could take half so that is what I decided. I might just be paranoid and causing these problems myself but, I have noticed an increase in sex drive as well as strange bowel movements i.e. Strange colors-yellowish orange. Does citalopram cause other types of side effects like these not listed on the pamphlet included with the medication?