陰道泡沫劑
陰道泡沫劑時興裝入帶塗藥器的小小的氣溶膠罐內。在把氣溶膠罐搖勻後，把吸入泡沫劑的塗藥器固定住，然後倒置插入陰道深處，將泡沫劑推送進陰道。必須在每次性交後半小時內給陰道塗上泡沫劑，重複一次比單用一次效果更好。泡沫劑既能殺滅精子也能機械性地阻塞子宮頸口，借此防止任何可能存活的精子進入子宮內。如果男方同時佩戴避孕套，避孕作用將會增強。
避孕有效率：約90%；如果男方同時佩戴避孕套，則接近100%。陰道發泡片和栓劑
陰道發泡片和陰道栓劑只能在有足夠的時間溶解於陰道內才能起作用。所以，每次性交前10-15分鐘就必須放入陰道內。但是，如果單獨使用，避孕效果大打折扣。
避孕效果：效果有限。
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使用殺精子製劑：1.用塗藥器推送陰道泡沫劑；2.放置陰道殺精子栓劑。
Using spermicides. 1. Inserting spermicidal foam with an applicator.
2. Inserting a spermicidal suppository.
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殺精子乳膏和凝膠劑
因為殺精子乳膏和凝膠劑有時在陰道內分佈不均，其效果不如陰道泡沫劑。正象使用陰道泡沫劑一樣，使用的量則能夠由使用者自己掌握。然而，當合併使用陰道隔膜時，它的避孕作用大大增強。如果無陰道隔膜可用，則男方應該佩戴避孕套。
避孕效果：如果不合併使用陰道隔膜，則效果較差。 |
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Contraception |
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Methods
of Contraception:Contraceptive
Methods for Women：Spermicides
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Vaginal Foam
Vaginal foam comes in a small aerosol can with a special applicator. After shaking the can, the woman fills the applicator with foam and then, lying down, inserts it deep into her vagina. This must be done not more than half an hour before each coitus. Two applications are better than one. The foam kills the sperm and also blocks the cervix mechanically, thus preventing any sperm cells that might have survived from entering the uterus. The protection can be increased further if the man uses a condom at the same time.
Effectiveness: about 90 percent; if the man also wears a condom, close to 100 percent.Foaming Tablets and Suppositories
Vaginal foaming tablets and suppositories can only work when they have time enough to dissolve inside the vagina. They must, therefore, be inserted 10 to 15 minutes before each coitus. However, if used alone they do not offer much protection against pregnancy.
Effectiveness: not very effective.
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Spermicidal Creams and Jellies
Spermicidal creams and jellies are less effective than foam because they sometimes disperse unevenly. Some can be used by themselves, just as vaginal foam. However, they provide much greater protection when used together with a diaphragm. If no diaphragm is available, the man should wear a condom.
Effectiveness: not very effective without a diaphragm. |
