Endocrine Drugs and Medications Q 27

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A constant dose of estrogen with varying doses of progestin are found in:

  

     A. monophasic pills

     B. biphasic pills

     C. triphasic pills

     D. Depo-Provera

    

    

Correct Answer: B. biphasic pills

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Biphasic oral contraceptive pills deliver the same amount of estrogen each day while progestin dose is increased halfway through the cycle.

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Option A: Monophasic pills have a constant dose of estrogen and progestin throughout the month. Monophasic birth control is a type of oral contraceptive. Each pill is designed to deliver the same level of hormone throughout the entire pill pack. That’s why it’s called “monophasic,” or single phase. Most birth control pill brands offer 21- or 28-day formulations.

Option C: Triphasic pills may have variations in estrogen as well as progestin levels. Triphasic oral contraceptive pills have 3 different doses of progestin and estrogen that change approximately every 7 days.Option D: Depo-Provera is a progestin product only. Depo-Provera is a well-known brand name for medroxyprogesterone acetate, a contraceptive injection that contains the hormone progestin.

Option D: Depo-Provera is given as an injection every three months. Depo-Provera typically suppresses ovulation, keeping your ovaries from releasing an egg. It also thickens cervical mucus to keep sperm from reaching the egg.

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