My sister is quitting drugs and cigarettes at the same time. is it safe to do this? doc is crystal meth 6 years. she says she doesnt feel good. how do i know if i should take her to get checked out by a doctor?

Meth withdrawal: should be performed and supervised by a physician and multiple products are available to stop smoking.

Rehab program: I would suggest that kicking a meth addiction be done under a doctor's supervision in a rehab program

Detox: I think it would be best for her to check into a detox facility for safe and proper treatment and care. At the very least, she should be evaluated and cared for by a specialist in substance abuse.