"took a while for it to start treating my depression, about 3 months to start feeling even remotely better and 6 months to a year to feel the full effects. at first, the medicine made me yawn a lot and almost made me feel more depressed (probably because it didn&#039;t start working as immediately as i had hoped). gradually went up from 20mg to 30mg after 6 months and then went up to 40mg after about a year. i have now been on celexa for 2 years and on the 40mg dose for about 1 year. this medication has honestly saved my life! i probably wouldn&#039;t be here without it. before celexa, most of my days were bad days and now i am finally enjoying my life again. i highly recommend celexa. don&#039;t be discouraged if it doesn&#039;t start working right away."