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Megestrol is an oral prescription tablet used in female dogs to help alleviate false pregnancies and help regulate female heat cycles. Megestrol is a synthetic chemical similar to the female hormone progesterone.
Megestrol is a female hormone that through its actions regulates the female heat cycle and can be used to alleviate false pregnancy.
Megestrol acetate tablets are indicated for the palliative treatment of advanced carcinoma of the breast or endometrium (i.e., recurrent, inoperable, or metastatic disease). It should not be used in lieu of currently accepted procedures such as surgery, radiation, or chemotherapy.
Tip: Megestrol tablets may be given whole or crushed and mixed in food.
Megestrol Dosage for Dogs | |
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Weight | Dosage |
All weights | When used to postpone estrus, the dose and duration of treatments depends on the stage of the cycle when therapy is begun. When used to treat false pregnancy, the usual dose is 1mg/lb of pet's body weight given once a day for 8 days |
Megestrol should not be used in pregnant animals. Tell your veterinarian if your pet is being given insulin. Megestrol may decrease the effect of insulin and your pet's blood sugar may increase. Also contact your veterinarian if your pet experiences increased thirst or urination, depression, mammary gland enlargement, temperament changes, vaginal discharge, vomiting, or yellow gums while being treated with Megestrol. Other drugs may also interact with Megestrol, so talk to your veterinarian or pharmacist before using any prescription or over-the-counter medications.
Megestrol should not be given to dogs prior to or during their first estrus cycle, or to pregnant dogs. Megestrol is for use in dogs only. Do not give to cats. Allow pet to drink plenty of water while taking Megestrol.
Weight gain is a frequent side effect of megestrol and is often due to increased appetite and is not necessarily associated with fluid retention. Other possible side effects may also occur including heart failure, nausea and vomiting, edema, breakthrough menstrual bleeding, dyspnea, tumor flare (with or without hypercalcemia), hyperglycemia, glucose intolerance, alopecia, hypertension, carpal tunnel syndrome, mood changes, hot flashes, malaise, asthenia, lethargy, sweating and rash.
Store at or below 77°F.