Friday, February 12, 2010

What is the thought process with Tri-Norinyl birth control?

a triphasic birthcontrol. I don't understand why the third phase of drug combo has a decrease in progesterin (reverts back to the amount in first phase). What uses could this be for therapeutically? ThanksWhat is the thought process with Tri-Norinyl birth control?
it evens out the amount of hormones in your system.

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