Review: I took NO2 for years and started with MRI's verion MONTHS before all the competitors came out with Nitric Oxide. I cycled it on and off with noticeable (I believed) pumps and vascularity. Although now I realize I am a pretty vascular guy by nature.

After 5 years, I had to discontinue taking all products with NO2 when I developed a nasty cold sore that lasted 4 weeks!!!! My doctor could not explain why, as I never had any history of cold sores. I was simply told that the virus must've laid dormant in my body and NO2 awakened it after 5 years... strange.

It sucks getting old.

Overall Rating: 8/10

Taste Rating:  N/A