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What is Megestrol?

Eric Stolze
Eric Stolze

Megestrol is a prescription drug that is sold under the Megace® brand name. This drug is a synthetic version of progesterone, a female hormone, and is typically used to treat several forms of cancer including endometrial cancer and advanced carcinoma of the breast. Doctors may also prescribe this medication to treat some patients who have lost too much weight or have lost their appetites as a result of a disease. Some users of this drug may experience side effects, and doctors may decide not to prescribe this medication in certain situations.

Most patients take megestrol orally as a liquid suspension or in pill form with a glass of water. In most instances, doctors do not typically restrict a patient’s diet while the patient takes this drug. Patients may develop an allergic reaction to this medication that may cause unusual symptoms in some cases. Allergic reactions can cause effects that require medical treatment in severe cases, such as throat closure, breathing problems and hives on the skin. Swelling of the face, tongue or lips may develop in some patients who experience an allergic reaction.

Hives may be an indication of a medication allergy.
Hives may be an indication of a medication allergy.

Some users of megestrol may experience serious side effects such as vision changes, a severe and sudden headache or a swelling and numbness of the legs or arms. Less serious side effects such as dizziness and weakness have also been reported by some patients who used this drug. Vomiting and nausea are possible with this medication, and some patients have reported menstrual bleeding, sweating and hot flashes. Insomnia and a decrease in sex drive have occurred in some instances. Many patients benefit from a discussion with a doctor about this drug’s side effects.

Nausea and vomiting are possible side effects of megestrol.
Nausea and vomiting are possible side effects of megestrol.

Insulin and oral diabetes medications such as glyburide, tolazamide and glipizide may become less effective if they are taken concurrently with megestrol. Some patients with diabetes can develop an unexpected increase in blood sugar while taking megestrol that typically shows up during regular blood sugar monitoring. Physicians typically ask diabetic individuals and other patients about any prescription drugs they are taking in an effort to minimize or avoid drug interactions.

Megestrol is a synthetic version of progesterone.
Megestrol is a synthetic version of progesterone.

Megestrol patients with a history of blood clots may require special monitoring or dosage changes in some cases. In most instances, pregnant women are not prescribed this drug due to its potential to cause birth defects. This drug may also pass into a mother’s breast milk and may have harmful effects on a nursing infant. Pregnant women and breastfeeding mothers may want to discuss their medication options with a physician to try and avoid serious complications.

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    • Hives may be an indication of a medication allergy.
      By: Jürgen Fälchle
      Hives may be an indication of a medication allergy.
    • Nausea and vomiting are possible side effects of megestrol.
      By: Alliance
      Nausea and vomiting are possible side effects of megestrol.
    • Megestrol is a synthetic version of progesterone.
      By: logos2012
      Megestrol is a synthetic version of progesterone.
    • Mood swings may occur as a result of low progesterone levels in women.
      By: Creativa
      Mood swings may occur as a result of low progesterone levels in women.
    • An allergic reaction to megestrol may cause facial swelling.
      By: Syda Productions
      An allergic reaction to megestrol may cause facial swelling.