Barrier Methods

Barrier methods are vaginal spermicides (foams, creams, suppositories), condoms, diaphragms, cervical caps and contraceptive sponges. Spermicides Vaginalschäume, creams and contain substances that form a chemical barrier to sperm by damaging the cell membranes of sperm, preventing fertilization. Most spermicides containing nonoxynol 9 and are available without prescription. These preparations is about the same effect; the pregnancy rate is 19% in ideal and 28% at typical (i. e. occasionally incorrect) application….

September 3, 2018