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Cats + Medications & Supplements

  • Maropitant (Cerenia) is a medication that makes stimulation of the vomit center extremely difficult. In dogs 16 weeks and older, it is used to prevent vomiting due to motion sickness and to prevent acute vomiting which may be associated with many illnesses.

  • Meclizine (brand names Antivert®, Dramamine® Less Drowsy Formula, Bonine®, Bonamine®, Postafen®, Univert®) is an antihistamine used off label to prevent and treat motion sickness and vomiting associated with it, in cats, dogs, and other small mammals. The most common side effect is sedation and sleepiness.

  • Medicinal mushrooms are given by mouth and are used over the counter (and under veterinary supervision) to supplement the treatment of cancer and other conditions. Give as directed by your veterinarian. Side effects may include stomach upset, diarrhea, dizziness, and skin rash. Do not use in pets that are allergic to mushrooms, and use cautiously in pets that are pregnant, nursing, or have diabetes, clotting disorders, low blood pressure, immune-mediated disorders, liver problems, or kidney disease. If a negative reaction occurs, please call your veterinary office.

  • Medroxyprogesterone acetate is given by mouth or injection and is used off label to treat reproductive conditions, sexual behaviors, and certain types of dwarfism and alopecia. Give this medication as directed by your veterinarian. Common side effects include increased appetite, increased thirst, weight gain, sleepiness, or changes in personality. Do not use in pets that are allergic to it, pets with diabetes or uterine bleeding, or prior to puberty, during pregnancy, 1-2 months after a heat cycle, or to treat false-pregnancy. If a negative reaction occurs, please call your veterinary office.

  • Megestrol acetate is given by mouth in the form of a tablet or liquid and is used in dogs or off label in cats to postpone the heat cycle or to treat false pregnancy. It can also be used off label in male dogs to treat prostatic hypertrophy. It should not be used in pregnant pets or pets with uterine disease, diabetes, or breast tumors.

  • Melatonin is given by mouth or as an implant under the skin and is used to treat sleep and behavior disorders, adrenal disease, and non-allergic hair loss, to suppress the heat cycle, and to improve breeding rates. Give as directed. Side effects are not common but may include sleepiness. Do not use in pets that are allergic to it. If a negative reaction occurs, please call your veterinary office.

  • Meloxicam is a non-steroidal anti-inflammatory agent used to relieve pain and inflammation in dogs and cats. It is indicated for the treatment of osteoarthritis. Meloxicam has also been used to treat pain associated with surgery.

  • Methazolamide (brand names Neptazane®, GlaucTabs®, Glaumetax®, MZM) is a carbonic anhydrase inhibitor used off label (extra label) to treat open angle glaucoma in dogs and cats. Do not use in pets that are allergic to it, have significant liver, kidney, or adrenal disease, have electrolyte imbalances, have severe obstructive lung disease, or have closed angle glaucoma.

  • Methimazole is used to lower the amount of thyroid hormone in the blood. This medication will not cure hyperthyroidism, but will help control the disease.

  • Methocarbamol is given by mouth or injection and is used on and off label to treat muscle spasms due to injury, inflammation, or certain toxicities. Give as directed by your veterinarian. The most common side effect includes sleepiness. Do not use methocarbamol in pets that are allergic to it. If a negative reaction occurs, please call your veterinary office.