Nonoxynol-9 (often abbreviated simply as N9) is the most common spermicide on the market, and it’s available in various gels, vaginal inserts, and lubricants. It’s an extremely popular chemical; if you’ve ever bought a condom with a spermicidal lubricant, you’ve probably used nonoxynol-9. While many people use spermicides to prevent pregnancy, it’s important to note […]