Why is nonoxynol 9 no longer recommended?
The spermicide nonoxynol-9 is not effective as a means of protection against HIV infection and may actually increase a woman’s odds of contracting the virus, according to a study published in the Sept. 28 issue of the Lancet .
How long does nonoxynol 9 last?
If used the correct way before you have sex, nonoxynol 9 gel works right away and lasts for up to 1 hour. Use nonoxynol 9 gel again each time you have sex.
What does nonoxynol 9 spermicide do?
NONOXYNOL-9 (no NOX i nol 9) is a spermicide (kills sperm). It is used for birth control to prevent pregnancy. Some formulas of this birth control can be used along with condoms, the cervical cap, or a diaphragm; read the label of the product you have chosen.
What are the chances of spermicide working?
Although you can use spermicide alone, it works better when you combine it with a condom or diaphragm. Spermicide used alone is about 70% to 80% effective. Spermicide condoms prevent pregnancy 87% of the time with typical use.
Which of the following contains nonoxynol-9 as a spermicide?
The Today Sponge is a soft, disposable polyurethane foam that contains the spermicide nonoxynol‐9. After it is moistened with water and inserted in the vagina, it becomes effective immediately and remains effective for the next 24 hours without the need to add spermicidal cream even with repeated acts of intercourse.
Which spermicide is most effective?
The most effective strength spermicide contains at least 100 mg of nonoxynol-9 per dose. You are more likely to get pregnant if you use a weaker spermicide. There is no difference in effectiveness between various spermicide types, such as gel, film, or suppository.
What are the side effects of nonoxynol-9?
All products: Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat. Vaginal irritation.
Can nonoxynol-9 cause yeast infections?
Use of nonoxynol-9, the active component in many spermicidal creams and foams, increases the risk of recurrent cystitis and yeast infections in women, according to Dr. Jackie McGroarty of Toronto General Hospital.
Is nonoxynol 9 the only spermicide?
It’s also because barrier birth control methods, like the diaphragm or cervical cap, must be used with a spermicide. Pulling N-9 — the only spermicide available in the U.S. — off the market would effectively eliminate those few existing nonhormonal sources of birth control.
How do you use nonoxynol 9?
Wash your hands before and after use. The sponge can be put in up to 24 hours before you have sex. If used the right way, Today Sponge (nonoxynol 9 sponge) works at once and lasts for up to 24 hours. Leave the sponge in for at least 6 hours after last intercourse.