cannot say. There s the meth and there is the intravenous. Meth is a powerful stimulant/stress hormone. It can cause vasospasm and loss of blood flow most anywhere. Mostly heart attack and stroke,but loss of blood flow to internal organs is also possible. Sometimes this is brief and no long term damage happens (when the pain goes, its all better) but there can be damage; so much that even the pain can t register (the nerves that run the pain died off too). Mostly there would be a catastrophic effect (ruptured bowel... kidney damage with bleeding into the urine, etc.).