What is RX Tri? A Guide to Triphasic Oral Contraceptives
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4 min read
With typical use, the failure rate of oral contraceptive pills is about 7%, meaning 7 out of 100 users get pregnant each year [1.6.3, 1.6.5]. When asking 'What is RX Tri?', it's key to know this term often refers to a class of effective triphasic birth control pills.
