Sponge

A sponge is a disk-shaped polyurethane device containing the spermicide nonoxynol-9.

How does the sponge work?

The sponge fits inside the vagina and covers the cervix to block sperm from reaching the egg. The spermicide within it kills the sperm . It is inserted before intercourse and must be left in place for at least six hours after intercourse. It is discarded after use.

There is a 14 to 28% chance of pregnancy and the sponge does not protect against std's.

What are the side effects?

• irritation and allergic reactions
  
• risk of toxic shock syndrome, a rare but serious infection

Resources: Food and Drug Adminstration 12/03; Texas Department of State Health Services