I started taking Nitrix this past week. I have already noticed some good results.

I have noticed the pumps it gives me..especially in my chest, abs and other major muscle groups! It feels very gratifying when exercising, especially with weights. I've also noticed a little light-headedness from time to time, but nothing major. I have been taking it for the "vein-popping increased vascularity" and "increased recovery time and nutrient transport to muscles"

I was unaware at the time I bought it that in also contains creatine. I was not planning on taking creatine at the moment because I do a lot of cardio and figured it might be counter-intuitive. I was thinking about taking creatine towards the spring, and have not fully researched it yet but know that it is supposed to be cycled. I have been taking about 6 nitrix a day and estimate this to contain about 2000-2500 mg of creatine. Are these amounts so minimal that is will not have to be cycled? Nitrix is supposed to be taken daily for up to 60 days.

Also, has anyone else tried taking any NO2/Arginine supplements? results? side-effects?