Satin Seduction(1986)

Taija Rae and her boyfriend Peter North have gone without sex for months while Peter preps for a big track competition. It seems when you go without something everywhere you turn you see sex and Taija can't stand it anymore! So she's requested her friend Dexter (Tom Byron) who is a real science geek to whip her up a sex potion for her boyfriend to get her satisfied but still keep his energy for the competition. When you play around with science like that, the consequences can be rather interesting!