If you use spermicidal foam, gels or cream, or lubricated condoms with added spermicide, they often contain the chemical nonoxynol-9 (or N-9). Since it's something you put inside your body, it's important to know about it. Take this quiz to test your knowledge.
The Nitty Gritty on Nonoxynol-9
T/F: Using nonoxynol-9 is great protection against HIV.