It would be very stupid to gamble. Even if you get a response it's highly unlikely someone actually checked labs to see what kind of effect an OTC product had. At best you'll get anecdotal replies. "Bro, I took product x and i didn't have bitch tits. It works."
There hasn't been an effective OTC product since the FDA banhammer, and even then you were better off buying the real stuff the OTC knockoffs tried to imitate if you chose to go the chemical route.