"lexapro worked well for me initially and helped me through a dark time. started on 5mg and increased does over time to 10mg, then 20mg.  however on the highest dose i felt very fuzzy-headed, and unmotivated.  couldn&#039;t concentrate and my mind wandered off constantly.  made it difficult at work where i have a high-pressure job.  i was weaned off the medicine and now feel much better. thankfully it worked really well at the start, when i needed it."