Before I answer your question, here is some background
information on Lexapro for your personal reference: Lexapro is an
Antidepressant and an SSRI. This drug is meant for patients who
have depressive disorders, anxiety disorders or panic disorders. It
is available in 5, 10, and 20mg tablets as well as in a liquid
form. Some of the major side effects include: insomnia, complex
sleep disorders, sweating, dry mouth, constipation, diarrhea,
indigestion, abdominal pain, decreased appetite, impotence,
anorgasmia in females, decreased libido, rhinitis, sinusitis,
flu-like stmptoms, and anaphylaxis Alright, now to answer your
question. You are probably experiencing the side effect of insomnia
or complex sleep disorders. These both can be very serious to a
person's health as adequate sleep is necessary to stay healthy. The
onset of the drug is slow after taken, and it is likely that you
only take it once or twice daily. This is because the medication
works slowly and lasts several hours. This medication has its peak
effect 3.5-6.5 hours after taking it, but this does not mean your
side effects will only last this long. In fact, they could last all
day. If this problem persists, I suggest going to see the doctor
who has perscribed this medication to you to describe the side
effects you may be having. This way, the doctor could help you fix
the problem and may even put you on a different medication that
wont produce the undesired effects. ** All of my information came
from the 2008 Lippincott's Nursing Drug Guide by Amy M. Karch ** I
hope this helped! - Brittany :)