Contraceptive Sponge Effectiveness

As far as contraception is concerned, there are many different options to choose from. While, some prefer barrier methods like using condoms, diaphragm, etc. others prefer hormonal ones, like, birth control pills, intrauterine devices, etc. Very few resort to abstinence or the withdrawal method. If you are among those who opt for barrier methods, then contraceptive sponges can be a good option. However, make sure to have a basic understanding about this birth control method and its use, beforehand. As in case of any other method of birth control, the most important factor is the effectiveness of the method.

What is a Contraceptive Sponge?

As the name rightly suggests, a contraceptive sponge is made of soft polyurethane sponge, which is said to have a texture that resembles vaginal tissues. The small, round disposable device has a thickness of around half an inch and a diameter of more than 1½ inches. As in case of cervical cap and diaphragm, this sponge too has to be inserted into the vagina. This sponge has a cylindrical depression on one side and a loop on the other. While, the indentation is meant for a perfect fit over the cervix and the loop helps in removing the sponge after use. In short, the design of this sponge makes it one of the easy to use birth control methods, especially, for females.

How Does a Contraceptive Sponge Work?

As mentioned above, a contraceptive sponge is inserted into the vagina and is placed over the cervix. So, it acts as a barrier that prevents entry of sperm into the cervix. Apart from that, this over the counter birth control product contains spermicide that are released into the vagina. While, some brands can be used directly, some others are required to be made wet, so as to activate the spermicide. This is applicable for the brand named 'Today', whereas other brands like 'Protectaid', 'Pharmatex', etc., are ready to use. The sponge has to be placed at least 24 hours before intercourse and should not be removed before six hours from the time of intercourse. This sponge must be removed after six hours and should not be retained for more than 24 hours. Once used, it is not meant for reuse. Another important point to note is that this method does not offer any protection against sexually transmitted diseases.

Effectiveness of Contraceptive Sponge

Effectiveness is one of the important factors that has to be taken into consideration, before choosing a method of contraception. As in case of most birth control measures, 100% protection from pregnancy is not guaranteed. According to the manufacturers, birth control effectiveness of contraceptive sponges ranges between 74% to 99%. However, this percentage may vary from one brand to another and the correctness of usage. As per the manufacturers, proper and correct usage is essential for this sponge to be effective. While, 'Today' sponge is claimed to be 89% to 91% effective, it is said to be 77% to 91% for 'Protectaid' and around 99% in case of Pharmatex. According to some studies, nine out of hundred women (who have never given birth), who use the sponge properly, will get pregnant within a year. As per these statistics, sixteen out of hundred such women will get pregnant within a year, if used improperly. In case of women, who already have kids, the chances of pregnancy with proper use of contraceptive sponge is 20 out of 100 in a year and 32 out of 100, if used improperly.

Now, you have a basic understanding about contraceptive sponge advantages and disadvantages, its use, effectiveness, etc. These sponges are easy to use and are easily available as over the counter products that does not require a physician's prescription. Those who are allergic to spermicide may experience side effects after using this product. It has also been observed that those who use it regularly are more prone to yeast infections and urinary tract infections. As far as contraceptive sponge effectiveness is concerned, you have to be more cautious. Use this birth control device properly for maximum effectiveness. It is also advisable to use this product in conjunction with some other method such as condoms, etc.