Hi Andrea
I am really sorry about your Ashton's problems, thats awful. Does Ashton suffer from Migraines too? RSD does cause nause, I get it. Personally I think it is the drugs that cause it and also the pain.

These websites might help you:
http://www.rsdalert.co.uk/FAQ/doesrsdcausenausea.htm
This website below gives you names of tablets and tell you their side effects
http://www.rsd-arena.co.uk/6425/6479...ession*id*val*
Hope this helps
Send Ashton my love
Hugs and kisses Ashton and family
Alison