Hi Pr glo,
It sounds like you are new to the fibromyalgia forum, so I would like to extend to you a warm welcome. I think that you will like it here, there are so many wonderful members on here.
I have never taken amytriptaline (sp), elavil, but I know that it can cause weight gain if you aren't careful. But everybody is different so it might not effect you in that way. I would go by, if it isn't broke don't fix it. If 50mg is working for you, I would stick to it. Being that the doctor said take one or two, I would only take two if you can't sleep or something. I understand that elavil helps with pain and helps pain medications work better. I really hope that it continues to work well for you.
Keep posting, we love new members.
Gentle hugs,
Karen