Spermicide
What is spermicide?
Spermicides contain nonoxynol-9, which kills sperm. Spermicides come in two varieties, cream or pessary.
How do they work?
They mainly work by killing sperm inside the vagina. They do this because they contain a spermicide - that is, an agent which attacks sperm. Spermicides should only be used as an adjunct to diaphragm or cap use.
How effective are spermicides as a contraceptive method?
A spermicide is around 80% effective when used in combination with another barrier method such as a condom, diaphragm or cervical cap. A gel or cream works best with these barrier methods. Some products like the cream are effective immediately after you apply them, while others take time to become effective. If you are using a pessary you will have to wait anywhere from 5 to 15 minutes before having intercourse for it to be effective.
What are the benefits to spermicides?
What are the drawbacks?
- Some people can find spermicides messy
- They do not protect against sexually transmitted infections
- They can cause irritation
- They can cause an interruption to sex
Are there side effects?
- The most common side effects associated with spermicides are irritation or allergy
What do I do if I want to become pregnant?
If you want to start trying for a baby, you can stop using spermicides at any time and it is advisable to start pre-pregnancy care such as taking folic acid and stopping smoking as soon as you decide to try for a baby.
