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Megestrol

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Molecule Summary

Uses
For the treatment of anorexia (loss of appetite), cachexia (severe weight loss), or an unexplained, significant weight loss in patients with a diagnosis of cancer or acquired immunodeficiency syndrome (AIDS).
Therapy
Supportive treatment in cancer patients
Side Effects
Swelling, Nausea, Mood Changes
3 Step Quality
Assurance
Cash on delivery
available
NPPA
Regulated

Molecule Description

Megestrol contains megestrol acetate, a synthetic form of the natural hormone progesterone. It mimics progesterone, blocks estrogen, and lowers sex hormone levels to help control cell growth and hormone activity. Megestrol is commonly used to treat hormone-related cancers and to stimulate appetite in people dealing with severe weight loss or muscle wasting from serious illness. Common side effects of Megestrol include weight gain, mild swelling in the legs or feet, stomach upset, hot flashes, and changes in menstrual cycles or sex drive. Take Megestrol exactly as prescribed and under the regular supervision of an oncologist, endocrinologist, or primary physician. Megestrol is a prescription-only medicine and should be used strictly under medical supervision. The treatment plan is decided by the treating doctor based on the condition being treated, your body response and the other medicines you are receiving. Do not change, stop or repeat a dose on your own. Before starting Megestrol, tell your doctor about all your existing medical conditions, especially heart, liver or kidney problems, and about every medicine, vitamin, supplement and herbal product you take. Tell your doctor if you are pregnant, planning a pregnancy or breastfeeding. Regular blood tests and clinical check-ups are usually needed during treatment so that side effects are picked up early.

Uses

  • For the treatment of anorexia (loss of appetite), cachexia (severe weight loss), or an unexplained, significant weight loss in patients with a diagnosis of cancer or acquired immunodeficiency syndrome (AIDS).

Contraindications

When should one not use Megestrol

  • Megestrol should not be used If :
  • You have a known severe hypersensitivity or systemic allergic reaction to megestrol acetate or any inactive ingredients in the tablet.
  • Known or suspected pregnancy

Side effects

Common side effects of this drug are:

  • Very Common Side Effects
  • Swelling (peripheral edema)
  • Nausea, diarrhea, and gas
  • Hot flashes and menstrual bleeding/spotting
  • Decreased sex drive
  • Other Common Side Effects
  • Shortness of breath and coughing
  • Trouble sleeping, unusual weakness Depression, confusion and abnormal thinking
  • Skin rash, hair loss, or unusual hair growth
  • High blood sugar or worsening diabetes
  • Slight increase in blood pressure
  • Serious Side Effects (Seek Immediate Medical Care)
  • Blood Clots: Swelling, warmth, and severe pain in the leg; sudden breathlessness or chest pain; or signs of a stroke or heart attack.
  • Adrenal Gland Issues: Extreme tiredness, dizziness, low blood pressure, throwing up, or confusion (especially during sickness, stress, or if you stop taking the medicine suddenly).
  • New Diabetes: Extreme thirst, needing to urinate very often, extreme hunger, or severe tiredness.
  • Severe Liver Issues: Yellowing of your skin or eyes, dark urine, or severe pain on the upper right side of your stomach.

Precautions and Warnings

Pregnancy

Pregnancy

Megestrol is contraindicated during pregnancy. It can cause potential damage to the developing fetus. Women of childbearing potential should use effective contraception during treatment.

Breast Feeding

Breast Feeding

Breastfeeding should not be undertaken during treatment with Megestrol because of the potential adverse effects on the nursing infant.

Driving

Driving

Avoid driving or operating machinery if you experience dizziness, fatigue, or drowsiness after taking your dose. Do not drive if your ability to do so safely is impaired.

Alcohol

Alcohol

Discuss alcohol intake with your treating doctor. Excessive alcohol can worsen dizziness, drowsiness, and liver strain during treatment.

Other General Warnings

Other General Warnings

Talk to your doctor if
  • Consult your doctor if you:
  • Have a history of deep vein thrombosis, pulmonary embolism, or blood clotting disorders.
  • Have pre-existing diabetes or impaired glucose tolerance.
  • Have active liver or kidney disease.
  • Weigh yourself regularly as directed by your care team to monitor fluid retention and actual body mass gain.
  • If you have diabetes, check your blood glucose levels frequently during treatment.
  • Seek emergency medical care immediately if you notice sudden swelling, warmth, or pain in your leg, or sudden shortness of breath.
  • Do not stop taking this medication suddenly without discussing it with your doctor.
  • Keep the bottle tightly closed and out of reach of children and pets.
  • Dispose of unused or expired tablets in accordance with safe medicine disposal standards.

Mode of Action

How Does It Work?

Megestrol works by triggering the brain's hunger center to increase your appetite, leading to higher calorie intake and weight gain.

Interactions

Interactions with other medicines

  • Oral Antidiabetic drugs & Insulin: Megestrol can elevate blood glucose levels; your doctor may adjust your diabetic drug dosage.
  • Warfarin / Oral Anticoagulants: Concurrent use may alter clotting time; your doctor might monitor your blood coagulation time closely if required.
  • Inform your physician about all concurrent prescription, non-prescription, and herbal products.

Interactions with food items

No specific food interactions have been reported.

Dosage

Overdose

In case of an accidental overdose, contact your doctor and visit the emergency room immediately for supportive and symptomatic care.

Missed a Dose

If you miss a dose of Megestrol, take it as soon as you remember on that day. However, if your next scheduled dose is near, skip the missed dose. Do not take two doses at once to make up for a missed dose.

Frequently Asked Questions (FAQs)

Weight gain with Megestroll therapy in cachectic patients is mainly due to increased body fat mass and total caloric intake, although mild fluid retention (edema) can also occur.

Patients receiving Megestrol usually begin to experience an increased appetite within a few weeks of regular administration.

Yes. Megestrol can increase blood glucose levels, worsen existing diabetes, or occasionally cause new-onset diabetes. Blood sugar should be monitored regularly during therapy.

Because Megestrol can mildly suppress your body's natural adrenal gland production, stopping it suddenly after prolonged use can trigger adrenal insufficiency. Your doctor will provide instructions on tapering the dose if therapy needs to be stopped.

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