Spermicidal lube is a contraceptive lubricant specially formulated to reduce the risk of pregnancy by killing or immobilizing sperm. Its active ingredient is usually nonoxynol-9, a chemical that attacks the sperm cell membrane, preventing sperm from reaching the egg. Spermicidal lubricants are easy to use, available in gels, foams, or jellies, and can be applied directly before intercourse. While they …