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It has been recognized for over 50 years that combined oral contraceptives (COCs) are also capable of offering health benefits beyond contraception through the treatment and prevention of several gynaecological and medical disorders.
Advantages of an IUD. 1  Safe and effective in preventing pregnancyâeven more effective than other methods of reversible birth control. 2  Along with implants, IUDs are the most cost-effective reversible method of birth control. 3  IUDs work for many years.  IUDs can be taken out at any time if you want to get pregnant or are unhappy with it.