Apparently this suggestion was downvoted.

Ya, Huge majority on reddit aren't into things like having opinions based on common sense, they just like to childishly downvote because the buttons there.

It's not that it's superior, it's that people don't understand flush/no flush and the benefits or drawbacks to either. I use the fast stuff all the time in the sauna, great for detox, but for arousal it'd be moronic to sit there red, itchy and feeling like your being stabbed by needles. Niacin (B3) is a vasodilator either way. When you're taking it for that purpose there's zero need to go through the discomfort of the fast release stuff. Just take it regularly and your good. Same way people use low dose Cialis.