"i started feeling the calming effects of lexapro after about three weeks. i&#039;m high-achieving, driven, and i love being productive and challenged. episodes of depression have made dealing with everyday life somewhat difficult, mostly due to the insomnia that comes with depression/anxiety. i was having difficulty sleeping for about a week when i broke down and spoke with my doctor. i was prescribed lexapro and my symptoms are almost entirely alleviated. i work midnights so i take lexapro at around 3:00 pm. the first week i had very bad headaches and felt dizzy. i took 5 mg instead of the 10 mg which decreased the intensity of the headaches, and again, the side effects subsided pretty quickly. in addition to this, i lost eight pounds."