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Medications & Supplements

  • Methionine (brand name Methio-Form) is a nutritional supplement used to make urine more acidic in cats and dogs. Urine acidifiers help manage certain types of urolithiasis (urinary stones). Methionine comes in gel, chewable, powder, and tablet forms. Monitor urine pH and seek immediate veterinary care if signs of Heinz-body anemia appear in cats (pale gums, red-brown urine, weakness).

  • Methocarbamol (brand names: Robaxin®, Robinax®, Robaximol®) is a muscle relaxant used to reduce muscle spasms associated with inflammation, injury, intervertebral disc disease, and certain toxicities. It is used only in companion animals. It is given by mouth as a tablet.

  • Methylprednisolone is given by mouth or injection and is used on and off label in dogs, cats, and horses to treat inflammatory, immune-mediated, and hormonal conditions. Common side effects include increased drinking, urination, and appetite, dull/dry haircoat, and/or weight gain.

  • Metoclopramide (brand names Reglan® and Maxolon®) is used off label in dogs, cats, and small mammals to stimulate movement in the stomach and upper small intestines to prevent esophageal reflux. In cats and dogs, it is used in the treatment or prevention of vomiting, and also to induce milk let-down and to promote milk production.

  • Metoprolol is a beta-blocker used to treat certain heart rhythm problems and hypertension (high blood pressure) in cats and dogs. It has also been used in the treatment of hypertrophic cardiomyopathy (HCM) in cats. It is used off label (extra label) in veterinary medicine.

  • Metronidazole (brand name Flagyl®) is used off label in the treatment of certain infections, such as those caused by Giardia and Trichomonas, in dogs, cats, small mammals, birds, reptiles, and other animals. It is often used to treat diarrhea and other intestinal problems.

  • Metyrapone is an adrenal enzyme blocking drug mainly used to treat cats with hyperadrenocorticism (Cushing's disease). It is most useful as a short-term treatment to stabilize cats with Cushing's disease before surgery. It may also be used in ferrets and hamsters.

  • Mexiletine is given by mouth and is used off label to treat abnormal heart rhythms and muscle disorders in dogs. Common side effects include stomach upset such as vomiting, trembling, or dizziness. Do not use in pets that are allergic to it.

  • Miconazole + chlorhexidine + tris-EDTA topical (brand name MiconaHex+Triz®) is an antifungal and antimicrobial cleansing agent used in the treatment of surface skin infections and to enhance the effectiveness of other topical antibiotics in cats and dogs. It comes in spray, mousse, shampoo, and wipe forms.

  • Miconazole ophthalmic is an eye medication used to treat fungal infections on the surface of the eye. It is used in dogs, cats, horses, cattle and reptiles. It is only available through compounding pharmacies and should not be confused with other forms of miconazole products meant to be used in humans.