Anyone taking EPO? Do they really work for menstrual cramp?

Oh. I just bought it and it says consume after meal. I'm still wondering is it 3 times a day or what. 

I wonder what are the side effects taking supplement in long term, experienced by forumners here? I really wonder forumners who takes pills like food daily still doing well to date? After all it's just a synthetic chemicals. Well, I just diversify the risk by do not stick to a single supplement for long period and not taking many supplement. I have tried some branded and suppose to be great supplement from reputable brands but still experiencing some side effects e.g.: migraine, insomnia and heatiness, example would be men's vitamins. Once consumed, I will feel my body is quite warm and on positive side, the BCAA in the supplement does give more stamina and energy if going to gym on that day, personally I feel easy to get agitated. And nowadays these medicine comes in 60s and 90s. I try to finish off these pills by reducing the side effects by taking 1 pill every 3 days, that is to finish 2-3 bottles will take about 1 year plus!