I smoked about 4 or 5 hits of meth within an hour 2 days ago, and ever since my left arm is tingly and colder and feels different. I m afraid I m vulnerable for having a heart attack, what should I do? Would beta blockers help? Should I smoke cannabis (as I do daily) or could that worsen the symptom? Alcohol helps, but only when it is in my system. I am not a frequent meth user, only a couple times a year, but this is the first time I noticed this symptom with my arm and am worried it could affect my heart.