See the entire paper below.
https://physoc.onlinelibrary.wiley.com/doi/10.1113/JP289038
Since flavanols supplement like CocoaVia is expensive, also I dislike the taste of cocoa poder. I learned flavanols mainly boost nitric oxide (NO) in the vessel, I wonder if I can use PDE5 inhibitor like Tadalafil to replace it?
Thanks for your insights.