Cost
Going to a health care provider to get fitted for the traditional diaphragm adds to the cost. Still, this is an economical contraception method because after the fitted diaphragm is obtained, only spermicide must be purchased.
Side Effects
Some women develop an irritation from, or allergy to, spermicide.
Good Alternative to Hormonal Methods
The diaphragm is not quite as effective for preventing pregnancy as are hormonal methods. However, for women who cannot or do not want to use a hormonal method, it is a very good, easy to use alternative.