Hi and welcome to Healthcare Magic. Thanks for your question...
You friend appears to be abusing mutiple drugs and this can cause a variety of deletirious and dangerous consequences. (you have mentioned that she had already experienced severe physical symptoms earlier). Preloading with vitamins
or supplements does little help to mitigate the adverse effects of the drugs. It may rather cause only bad interactions with the drugs. As for her numbness
in the little finger, she needs to consult a doctor and have a proper evaluation done to ascertain the cause.
Please do let her know that though drug abuse
may give temporary highs, they are bound to cause dangerous physical and psychological consequences, some of which may even be life threatening. There is no use regretting later. If she has any difficulty in quitting, as a friend, your duty is to help her seek professional help.
Wish you all the best.
- Dr. Jonas Sundarakumar