Among the less reliable contraceptive methods for women are the so-called chemical methods like pessaries, foams, jelly or cream, which can be inserted into the vagina with a plastic applicator. All of them contain a spermicide called nonoxinol-9 that kills sperm.

They can all be bought over the counter in chemists.

What you must be aware of?
Chemical contraceptives are designed to be used with barrier methods of contraception, such as condoms and diaphragms. They must be inserted into your vagina just before sexual intercourse. They only work for 30-60 minutes. If you continue having sex after this time you must insert another dose into your vagina.

Used by themselves they will not protect you from sexually transmitted diseases (STDs), despite having a slight anti-germ action. You need to use a condom to protect against STDs.

How do you use them?
They must be inserted as far into the vagina as possible. Some products work after three minutes while others do not become effective for 15 minutes.

The packet will have a leaflet that tells you exactly where to put your contraceptive and how to be as careful as possible. Read it thoroughly and take your time before using it for the first time. Have a 'rehearsal' before 'the first performance' (insert some of the product without having sex). Try it out together the first time to avoid fumbling under the blankets and in the dark.

It is very important that the chemical methods are used correctly, otherwise they will not always work.

Who will this method of contraception suit the best?
The chemical contraceptives are suitable for you if you don't think of pregnancy as a disaster. You can make them more effective by using them with other methods, such as a condom or diaphragm.

If you need a totally reliable contraceptive, you should not rely solely on chemical methods.

If contraceptives are needed only every now and again, then you should protect yourself against sexually transmittable diseases as well as pregnancy. You could use both a condom and a chemical method.

It is good idea for both men and women to carry contraceptives when they go to a party or on holidays. They can never be certain what might happen.

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