| http://www.w3.org/ns/prov#value | - : Releases about 60% more estrogen than birth control pills, increasing the risk of blood clots and other serious side effects; may be less effective for women who weigh more than 198 pounds; does not protect against STDs or HIV.Depo-Provera What it is: Time-released synthetic progesterone injected into the buttocks or arm every three months to stop the ovaries from releasing eggs; thickens cervic
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