How well does spermicide work in preventing pregnancy?

Answer 1

The percentage of women who experience accidental pregnancy while using spermicides alone is between 3% and 21%. This is due to the differences between brands and the effectiveness in application. It also does not stop the transfer of STD's which is a huge risk.

Using it in combination with other forms (preferably a condom) it can be up to 99% effective but remember no matter what method you use there is always a risk of pregnancy.

Answer 2

First of all spermicide has nonoxynol-9 a chemical that kills the sperm and u can use it alone and/or with birth control and because u should use it with another form of birth control it would be the better choice rather than 2 use it by its self . The way it works is,spermicide kill s the sperm before they are able to swim into the uterus. To be effective, the spermicide must be placed deep in the vagina and make contact with the cervix. Creams, gels, and foams are squirted into the vagina using an applicator. Other types of spermicides include vaginal contraceptive film (VCF), a thin sheet placed in the back of vagina by hand, and vaginal suppositories.Spermicide must be placed in the vagina before sexual intercourse. Some offer protection right away (like foams and gels), therefore suppositories and VCF must be placed in the vagina at least 15 minutes before sex so they have enough time to dissolve and spread. All forms of spermicides are effective when inserted less than 1 hour before having sex. If more than 1 hour goes by before having sex, or if you have sex again, another application of spermicide is needed. Spermicide should not be washed or douched away for at least 6 hours after having sex. Over the course of 1 year, about 29 out of 100 typical couples who rely on spermicide alone to prevent pregnancy will have an accidental pregnancy. Of course, this is an average figure and the chance of getting pregnant depends on whether you use spermicides correctly and every time you have sex. Spermicides are most effective when used in combination with another form of birth control.In general, how well each type of birth control method works depends on a lot of things. These include whether a person has any health conditions or is taking any medications that might interfere with its use. It also depends on whether the method chosen is convenient — and whether the person remembers to use it correctly all the time. Spermicides are not as effective on their own as other forms of birth control. However, they are convenient, inexpensive, and easy to use.

Answer 3

There is no form of birth control (aside from abstinence) that is 100% effective. THe effectiveness of the spermicide depends on whether or not you are using it exactly as described, what kind it is, and what the medical ingredients in it are -- Not all spermicides have the same percentages or the same "ingredients" in it. Your best bet is to combine using that method of birth control with another -- like condoms for instance.

If all else... You could read the package, and provided you follow the directions to the letter, the effectiveness is written right on the box that it came in (most times in small print)

"...Over the course of 1 year, about 29 out of 100 typical couples who rely on spermicide alone to prevent pregnancy will have an accidental pregnancy. Of course, this is an average figure and the chance of getting pregnant depends on whether you use spermicides correctly and every time you have sex. Spermicides are most effective when used in combination with another form of birth control..."
(http://kidshealth.org/teen/sexual_health/contraception/contraception_spermicide.html)

Answer 4

No spermicide is 100%. Highly recommended that you use in combination with another method (condoms are closer to 100%).
Some lubricants contain a spermicide agent just in case of condom rupture.
In no way spermicide can stop HIV/AIDS/STDs transmission.
Condoms are much safer.

Answer 5

93% effective against those average to weakest sperma-swimmers. The strongest 7% then gotta be caught by a 2nd barrier.

Answer 6

Not very well on it's own. Try condoms and spemicide together. That will make your chances TONS less and darn right good in avoiding pregnancy. As well as disease.

Answer 7

"How effective are these methods? These chemical/barrier methods are about 80-95% effective when used on their own, but are best when used with condoms or diaphragms.

Did you know that foam with a condom is almost 100% effective? "
http://www.peelregion.ca/health/hsexual/htmfiles/bcfoams.htm#3

Answer 8

It's not 100%! It can be used as added protection with a condom though.

Answer 9

I wouldn't rely on it by itself, but used with a condom should work pretty well.

Answer 10

Hay do not fool yourself,they are highly unpredictable