"i started on lexam 20mg (escitalopram,) three days ago after having a three month break from mirtazipine 30mg, which i took for 16 months. the first night i took lexam, i experienced some side effects about 1&amp;1/2 hours after taking it. i felt dizzy and my heart rate increased. i felt out of breath &amp; had to lie down. overall the experience itself was highly entertaining and much better than the depressive state i had been. when i first took lexam, i went from being anxious and severely depressed to feeling much better about my life, even after only 3 days. don&#039;t give up on this medication. it truly works."