Does the Lubricant in Condoms Cause Harm? Vinmec Planned Parenthood Spermicide is a non hormonal birth control you place in your vagina. It prevents pregnancy by making it harder for sperm to swim and Instagram All You Need To Know About Spermicide: What Is Spermicide and How Effective Is It? Condoms protect against unplanned pregnancy and most sexually transmitted infections, including HIV, gonorrhoea, chlamydia, and syphilis. Use only water or silicone based lubricant with a condom during vaginal and particularly anal sex.