Hi welcome to Health care magic forum.
Thanks for calling Health care magic forum.
The skin side effects like numb ness of lips is the possible side effect of the ranexa 2000
Due to increasing the dose at a stretch to 2000.
Other things like light headed ness also may be due to the drug it self.
You are telling that the chest pain
is also not relieved completely. It could be due to reffered pain from the gastric origin.
I advise you some diet recommendations as avoid taking more of spices, junk foods, and oily foods to avoid gastric irritation.