Have taken cocaine now my feet have turned purple also freezing cold and numb ?

Get care NOW!: A rare side effect of cocaine is arterial constriction, sometimes so much that tissue damage can occur. This is most commonly reported for the coronary arteries, resulting in cocaine-induced heart attack. You may be having this problem with the arteries to your lower legs. If it continues more than a few hours, you could lose your toes or feet. Go to urgent care or emergency room immediately.