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Over-the-CounterChemical Barrier

Spermicide

A chemical gel, foam, or film inserted into the vagina before sex to disable sperm, available over the counter.

Last verified Updated Sources

Spermicide (Chemical Barrier)

Method facts

Spermicide
Effectiveness
79% typical use84% with perfect use
How long it lasts
Single use, one dose before each act of sex (gel works for up to 1 hour; film goes in 15 minutes to 3 hours before sex)
Reversibility
Reversible
STI protection
No
How you get it
Over-the-Counter · No prescription
Cost
$16–$18 / per packageInsurance coverage: Varies
Status
Over-the-Counter

How well it works

79 out of 100 people successfully prevent pregnancy in a year. Typical use effectiveness rate.

Least effective: under 90 out of 100 people successfully prevent pregnancy per year.

How was this measured?

First-year failure rates are 21% with typical use and 16% with perfect use, so spermicide alone is 79% and 84% effective.

The details

What the evidence says

How well it works, what to watch for, who should avoid it, and the studies behind it.

How it works in the body

A chemical (usually nonoxynol-9) immobilizes or kills sperm on contact. Inserted into the vagina before sex.

Side effects

  • Vaginal or penile irritation
  • Increased risk of UTI
  • Allergic reaction

Who shouldn't use this

Talk to a clinician first if any of these apply

  • Sensitivity to nonoxynol-9Irritation or allergy to spermicide chemicals such as nonoxynol-9
  • High risk of HIV exposure, or HIV in you or a partner (frequent use may increase transmission risk)Repeated, high-dose use of the spermicide nonoxynol-9 is linked to genital lesions, which might increase the risk of HIV infection

Clinical guidelines

Cost and insurance

Cash price about $16 for a box of 10 prefilled gel applicators and about $18 for 9 vaginal films as of October 2026 (Drugs.com). Each applicator or film is one dose.

Insurance coverageVaries

What to know about Spermicide

What it is

Spermicide is a chemical that immobilizes or kills sperm on contact. It comes as gels, foams, films, suppositories, and tablets that you insert into the vagina before sex. A common active ingredient is nonoxynol-9.

How well it works

Spermicide alone is less effective than many other contraceptive methods. With typical use, about 21% of users get pregnant in the first year, so it works better with a barrier method like a diaphragm, cervical cap, or condom. Timing depends on the product: some spermicides must go in at least 10 to 15 minutes before sex, and many work for only 1 hour after you put them in. Use a new dose for each act. You can buy it over the counter at pharmacies or online.

Side effects and cautions

Frequent use of nonoxynol-9 can irritate vaginal tissue, which may increase the risk of HIV transmission if you are exposed. For this reason, spermicide is not recommended for people at high risk of HIV.

Where to get it

You can buy spermicide over the counter at pharmacies, grocery stores, and online without a prescription. Some family planning clinics and Planned Parenthood health centers also have it.

1 product in this category

Specific branded items that use this method. Compare manufacturer details, active ingredients, and regulatory status.

Frequently asked questions

Sources (11)
  1. Research source: Guttmacher Institute Contraceptive Effectiveness / Contraceptive Technology 21st ed.
  2. Clinical guideline: CDC U.S. MEC barrier methods
  3. Research source: CDC — Contraception, birth control methods (spermicides)
  4. Research source: DailyMed — nonoxynol-9 4% vaginal contraceptive gel, prefilled applicators (OTC drug facts label)
  5. Research source: DailyMed — nonoxynol-9 vaginal contraceptive film (OTC drug facts label)
  6. Research source: Drugs.com price guide — nonoxynol-9 vaginal contraceptive film and gel
  7. Research source: Planned Parenthood — Spermicide
  8. Research source: Planned Parenthood — How effective is spermicide?
  9. Research source: Planned Parenthood — How do I use spermicide?
  10. Research source: Planned Parenthood — How do I get spermicide?
  11. Research source: Planned Parenthood — What are the disadvantages of using spermicide?

How we verify