避孕针剂
肌内避孕药注射在许多国家都可运用。依据被注射的激素及其剂量不同，避孕针剂每月或每三个月注射一次，注射部位为臀部或上臂（三角肌——译者注）。被注射进肌肉组织以后，激素缓慢地被吸收，这样注射一次会维持避孕数周或数月。但是，恰好与口服避孕药一样，避孕针剂对某些妇女可能有讨厌的副作用，所以，不应该不加选择地注射避孕针剂。使用之前需要做细致的医学检查并得到医生的指导。不是每一个妇女都喜欢这种避孕方法。
避孕效果：非常有效。 |
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Contraception
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Methods
of Contraception: Contraceptive
Methods for Women
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Injections
In many countries intramuscular contraceptive injections are available. Hormones are injected in the buttocks or arms and are repeated either once a month or every three months, depending on the hormones and doses injected. Deposited in muscle tissue, they are absorbed slowly and thus keep preventing pregnancies for weeks or months at a time. However, just as in oral contraceptives, there may be some unpleasant side effects for some women, and therefore these injections should not be used indiscriminately. A careful medical examination and a doctor’s supervision are necessary. This method is not for every woman.
Effectiveness: Very effective |
