31. Each spermicide has its own instructions on how to use it and each product should be read thoroughly. 32. Cervical caps, however, and the lesser amount of spermicide used with them seem to carry less risk. 33. Unlike some spermicides , the gel doesn't irritate vaginal tissues, said Procept Vice President Albert Profy. 34. Advantage-S spermicide is sold in the United States and China and manufactured by Columbia Laboratories of Miami. 35. Quist said, for example, that plants are now being developed to produce compounds that act as spermicides . 36. The sponge helps prevent pregnancy in two ways : It covers the cervix, and it contains a spermicide . 37. The women were given condoms and were randomly assigned to get either a spermicide film or an inactive placebo film. 38. The more frequently a woman uses the spermicide , the more the vagina wall is damaged, one study said. 39. Options included the cervical cap which was the most popular coitus interruptus, and spermicides based on soap and oil. 40. The liberals had a victory in 1985, when it was made legal to buy condoms and spermicides without prescription.
