Chemical spermicides
Chemical spermicides are all for vaginal use and are available us
procedures on how chemical spermicides can be used
Chemical contraceptives as spermicide (usually in the form of a foam, jelly or tablet) is inserted into the vagina about half an hour before having sex. If the sexual ‘session’ happens to go on for a long time, a top-up dose of spermicide should be used again.With a barrier method, such as a condom, sponge, cap or diaphragm. you smear a spermicidal jelly or cream onto the diaphragm or cap before putting the device inside you. This ‘seals the edges’, and makes it less likely that your partner’s sperms will get past the barrier.
These products can be bought without prescription but in case of irritation you are advised to see your doctor .
note that the agents should not be used on their own because they're not less effective. If you use them by themselves, there is a high chance that sperms will get through and can cause pregnancy.
family planning experts agreed that chemical contraception should be used in combination with a 'barrier method'
chemical contraceptives work by killing sperm inside the vagina. They do this because they contain a spermicide – an agent that attacks sperm.
The most common spermicide used in these products is nonoxinol-9. It's moderately effective, but it can't be relied on to get rid of all sperm.
Advantages
You put them into the vagina before intercourse. Either the woman or the man can practice.
In the case of pessaries you must give them time 30 minutes to dissolve before you start having sex.
Chemicals which can be found in the product
There are various kinds available worldwide Gygel, a jelly containing nonoxinol-9, Encare pessaries, Ortho Options Conceptrol Vaginal Contraceptive Gel and vaginal contraceptive foam (VCF).
The main types are as follows.
Foams
These are in aerosol form. You insert them into the vagina, with a special applicator, immediately before sex.
Vaginal tablets
These are also widely known as pessaries.
In some books about sex, you may still find them referred to as 'suppositories'. This term has now been dropped – because most people understand the word 'suppository' to mean something put into the rectum.
Because they’re solid, you must give them time (half an hour) to dissolve before you make love.
Gels, jellies and creams
These are mainly intended for spreading onto contraceptive diaphragms or caps before insertion.
Films
Squares of contraceptive film are still marketed in some countries, but not in other countries.
contraceptive sponge
sponge were popular in the 1980s and 1990s. But they dropped out of fashion for some years, before making a recent reappearance.
Is made from polyurethane foam soft shape of a saucer and two inches in diameter contains spermicides. It is inserted deep into the vagina before intercourse to prevent pregnancy by making the sperm in active in the vagina and also blocking sperms entering the uterus it is said to be a safe highly effective contraceptives for the women who have never given birth before and does not contain any hormones.
If you already have one child or more these choice is not convenient for you its better you consider another method of contraceptives or also using a condom to improve your chances of pregnancy prevention. Warning these contraceptives does not protect you from sexually transmitted infections.
PROCEDURE
Before inserting the sponge into your vagina and before intercourse wash your hands to prevent germs that may cause infection into your vagina wet the sponge thoroughly with clean water to activate the spermicides squeeze the sponge the roughly introduce the sponge into the vagina with the dimple side facing up and the string loop facing down so that it can be tight to cover the cervix The walls of your upper vagina hold the sponge in place, and the cup-like indentation helps keep the sponge centered on your cervix.
Insert the sponge before sexual intercourse and leave in place for at least six hours afterward. Protection begins once you insert the sponge and lasts up to 24 hours — the amount of time the spermicide is effective. During this time, you're protected even if you have intercourse more than once. After you remove the sponge, you're no longer protected against pregnancy.
To remove, pull the sponge out of your vagina using the string loop. Occasionally, the sponge may turn upside down, making the loop hard to reach. If this happens, slide your finger around the edge of the sponge to find the loop or grasp the edge of the sponge with two fingers and gently pull. Sometimes the sponge may adhere to the cervix because of suction. If this happens, use your finger to lift the sponge away from the cervix on one side, breaking the seal. Then, you can remove the sponge normally. Check the sponge after removal to make sure that you've removed the whole sponge, not just part of it.
Advantages
• Easy to use
• Doesn't perceptibly hinder sexual experience
• Effective immediately if used correctly
• Disappearance of contraceptive effects when its use is discontinued
Disadvantages
• May be difficult to remove
• No protection against STD's
• Requires advance planning to place the sponge before intercourse
• Modestly effective
• Effectiveness declines after childbirth
• Side effects uncommon but may be dangerous
• Limited availability
TODAYS SPONGE
The ‘Today Sponge’ is a soft polyurethane sponge, containing nonoxinol-9.The idea is that you place it over your cervix – so it forms a barrier, as well as being spermicidal. There's a small loop on the underside to make it easy for you to remove.In 1995, the manufacturers ceased making it, purely because of commercial reasons. But some years later, an American pharmaceutical company bought the patent. They re-introduced it to the USA in 2005, and it's now available again in Canada and some parts of Europe.It may well return to UK pharmacies soon.
The Protected contraceptive sponge is a polyurethane barrier device, impregnated with three spermicides: nonoxinol-9, BKC and sodium cholate. It's available in Canada, and worldwide online.
The Pharmatex contraceptive sponge is a foam cylinder, containing BKC. It's available in Europe, and also online.
Note: please don't use sponges while you're menstruating because they may increase the risk of toxic shock syndrome (TSS).
Asian spermicidal products: spermicides such as ‘Praneem’ are common in Asia. They're welcomed as being inexpensive and are easily obtained by women. They're often brought back to the UK by holidaymakers. Many of these products are herbal in origin. efficacy or side-effects not known.
chemical spermicides can harm you if not used appropriately Various fragrances, colourings and other components are in spermicidal products. Both men and women can become allergic to these ingredients. Symptoms of allergy include soreness, swelling, redness and itching. If allergy occurs, take medical advice and then switch to another method.
Nonoxinol-9 has been shown to cause vaginal irritation in some women. AIDS experts are concerned that damage to the delicate surface of the vagina could make it easier for the HIV virus to be contracted.
Note that nonoxynol-9 cannot give you any worthwhile protection against chlamydia, HIV or other sex infections. spermicides chemicals can not last all night they are only effective for about 45 to 60 minutes. If you go on having sex longer than that you need to insert a top-up of spermicide.
Varieties of brands are available varies from country to country but many other brands can now be found online.
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