If you are into vitamins & supplements - I can suggest a few that might be of help.
A good multi
VitC
Cal/mag blend
MSM
Grape seed extract

If you are interested in homeopathic remedies
arnica montana = is good for muscle pain/soreness
the rest would need to be looked per your symptoms
some of the online sites suggest what is good for each problem but that can be looked at later if you are interested in that approach.

Just don't get too carried away with stretches and adding too many things at first, go slow and easy - start with the basic poses and stretches and if anything flares back off till it calms down.

Sharon Butlers RSI book -or her website articles - explain much about best to see long term pluses. resolving sticky fascia issues is her main focus.
www.selfcare4rsi.com