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  • Epinephrine is a drug used most often in emergency situations for animals (e.g., anaphylaxis, cardiopulmonary resuscitation [CPR]). Automatic injection devices for epinephrine (EpiPen, EpiPen Jr) are used off-label in pets to treat anaphylactic (allergic) reactions that occur away from the veterinary hospital.

  • Eprinomectin + praziquantel (brand name Centragard) is a topical antiparasitic drug used to treat and control hookworm, roundworm, and tapeworm infections, and to prevent heartworm disease in cats and kittens that are at least 7 weeks of age and weigh at least 1.8 lb (0.8kg).

  • Epsiprantel (Cestex®) is an oral deworming medication used to treat and kill tapeworms in dogs and cats. It comes as oral tablets that should be given with food. The medication typically takes effect within 1-2 days, but laboratory tests are needed to evaluate its effectiveness.

  • Ergocalciferol is a form of vitamin D that is sometimes used in veterinary medicine to treat low calcium blood levels that result from condition called hypoparathyroidism. Ergocalciferol is given orally.

  • Erythromycin ophthalmic is an antimicrobial medication used to treat certain types of bacterial eye infections in cats, dogs, and other species. Its use in veterinary medicine is considered off label (extra label). Erythromycin ophthalmic comes in ointment form.

  • Erythromycin is given by mouth or injection and is used off label to treat bacterial infections and gastrointestinal motility problems in many animal species. Do not use in pets that are allergic to it, have liver disease or dysfunction, or in pets such as rabbits, gerbils, guinea pigs, or hamsters.

  • Esafoxolaner + eprinomectin + praziquantel (NexGard COMBO) is a topical antiparasitic medication used to prevent heartworms and to prevent and treat intestinal parasites (hookworms, roundworms, and tapeworms), ear mites, fleas, and ticks (black-legged tick, lone star tick) . It is also used off label to treat skin mites in cats.

  • Esomeprazole is a proton-pump inhibitor antacid used to treat stomach ulcers in cats, dogs, and horses. It is used off label (extra label) in veterinary medicine. Esomeprazole comes in capsule and tablet forms.

  • Esophageal tumors are extremely rare but more often than not malignant type tumors. The cause is unknown but cases in tropical environments may be due to infection by the worm Spirocerca lupi. Treatment options are limited as surgical complications are high due to the advanced nature of the disease at time of diagnosis.

  • Esophagostomy tubes are placed through the skin of the neck into the esophagus to enable ongoing nutrition in cats that either refuse to eat or are unable to chew and swallow food. A diet will be recommended by your veterinarian but must be liquefied with water before it can pass through the tube. Medications can also be administered through the tube. Step-by-step instructions are provided. The decision to remove the tube will be determined by your veterinarian.