Hey Joy,Although you can take Paxil any time during the day it is usually taken in the morning as it may cause insomnia. However, if you find Paxil makes you drowsy, take it at bedtime. It is important to take the Paxil dose at the same time everyday to maintain an even level of the medication in your blood.
I am going to post a link for you that lists the most common side effects of the SSRI medications. I have been on many over the years and the side effects from each one were different for me. Some gave me no problems and others I was not able to tolerate. Paxil caused me to yawn.
http://depression.emedtv.com/ssris/ssri-side-effects.html
Please do feel comfortable posting here about your PTSD as it is considered one of the anxiety disorders. We are here to help and support.
Gentle Hugs,
Kitt