i used no2 inthe product from twinlab had 100mgs of 1-ad and 4-ad and had 200 mgs of no2 (nitro pump complex (basically arginine like anadrol devourer said))it was 60 dollars a buck a pill and i saw nothing besides one day i did throw 120 feet in discus but it never happened again it was just a fluke. no better pump in the weight room just strength went up dramatically just because i hadnt lifted heavy in a while

so basically what im saying is it is worthless