I drink powered beets for the nitric oxide as well as betaine which helps with ATP similar to creatine. I also take 1 to 2 grams of citriline a day for nitric oxide. I'm interested in increasing nitric oxide more for heart health than performance.

I've been reading your herbal therapy articles. Have you ever used fenugreek? A lot of people on the internet seem to recommend it. I even heard Frank Zane recomnend it in an interview. Maybe if you have experience with fenugreek you could add it to your herbal series.