Yes, it will affect your sex drive, but in a good way. Seriously, I take it for two days before I know I'll get laid even off cycle. It makes you cum like an elephant. I'd say it increases volume by about 50%. I've even had girls comment on how much cum I can produce after taking it.
so yes, take it off cycle, it's a lot of fun. Just a half tab the day before, a full tab morning of.