Illustrated Articles
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Allopurinol is an oral medication typically used to prevent uric acid and calcium oxalate stones in dogs. It is also used off-label to treat leishmaniasis and gout in dogs and other species. Side effects are uncommon but may involve stomach upset. Caution must be taken when allopurinol is used in conjunction with certain other medications. It should not be used in pets with liver or kidney dysfunction or in red-tailed hawks.
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Alprazolam is a medication given by mouth as a tablet or liquid used off label in cats and dogs to treat anxiety and phobias. Common side effects include sedation, increased appetite, or uncoordinated walking. This medication should not be used in pets with a paradoxical reaction and should be used with caution in debilitated, geriatric, pregnant, lactating pets, or in pets with liver or kidney disease, or glaucoma. If a negative reaction occurs, please call your veterinary office.
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Alternative diets cover a range of options that target specific feline nutritional needs. While some alternative diet options include certain ingredients like novel protein sources, others exclude certain ingredients like grains. Determining which diet is best for your cat should include a discussion with your veterinarian, as there is no documented data that alternative diets are any healthier for the average cat compared to conventional diets.
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Aluminum hydroxide is commonly used off label to treat high phosphate levels in pets with kidney disease. It is given by mouth, with meals, in the form of a liquid gel, powder, or a compounded capsule. The most common side effect is constipation, and therefore it should be used with caution in pets with a gastrointestinal obstruction or pets prone to constipation. If a negative reaction occurs, please call your veterinary office.
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Amantadine is an antiviral medication given by mouth in the form of a tablet, capsule, or liquid, that is mainly used off label for its pain control effects in pets. Common side effects include agitation and gastrointestinal effects. It should not be used in pets that are allergic to it, or that have untreated glaucoma. It should be used with caution in pets with liver, kidney, or heart disease, or in pets with eczema or seizures. If a negative reaction occurs, please call your veterinary office.
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Amitraz is a topical solution in the form of a medicated dip, spot-on treatment, or collar used to treat demodectic mange or for the prevention of flea and tick infestations. Common side effects include sedation, incoordination while walking, slow heart rate, gastrointestinal effects, skin irritation, and temporary high blood sugar. This medication is contraindicated in very young animals, and used with caution in old, debilitated, diabetic, or small-breeds. While animals may exhibit signs of sedation, contact your veterinary office if your pet cannot be aroused from sleep or if the sedation lasts for more than 72 hours. Amitraz is toxic if swallowed.
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Amitriptyline is used off label and given by mouth to treat behavioral and pain disorders in dogs, cats, and occasionally birds. Common side effects include sedation, dry mouth, constipation, and urinary retention. This medication should not be used in pets sensitive to TCAs, seizures, or pets currently using MOIs or flea collars. If a negative reaction occurs, call your veterinary office.
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Amlodipine is given by mouth and is used on and off label to treat high blood pressure in cats and dogs. Common side effects include vomiting, diarrhea, lack of appetite, sleepiness, or gingival (gum) overgrowth. Do not use in pets that are allergic to it, are in shock, have aortic stenosis, or are in liver failure. If a negative reaction occurs, please call your veterinary office.
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Ammonium chloride is used off label and given by mouth to treat metabolic alkalosis, struvite stones, and certain toxicities occasionally in small animals and more often in large animals. The most common side effects include pain at the injection site or stomach upset if given by mouth. Do not use in pets with severe liver, kidney, heart, or lung disease. If a negative reaction occurs, please call your veterinary office.
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Amoxicillin is given by mouth and is used on and off label to treat certain bacterial infections in a variety of species. Common side effects include gastrointestinal effects such as lack of appetite, vomiting, and diarrhea. Do not use in pets that are allergic to it or other penicillins, cephalosporins, or other beta-lactam antibiotics, or in rabbits, guinea pigs, chinchillas, hamsters, or other small mammals. If a negative reaction occurs, please call your veterinary office.