In the last week or so I started passing out without no reason, or at least none I know about. I suddenly start feeling all my body numb and lose my consciousness for a very short period, about 3-4 seconds. After that I wake up feeling like nothing happened at all. I have some minor heart issues, but I don't think it has nothing to do with it since I had no problems like this before. Does anyone knows if painkillers od can cause this ? I take between 5-30 everyday, sometimes mix them with energy drinks, but they`re not too strong. Only over-the-counters. I don't think it's anything serious, but I'm curious to know why this is happening.