If you have any reason to suspect your pet has ingested something toxic, please contact your veterinarian or one of the other resources listed:
ASPCA Animal Poison Control Center 24-hour hotline at (888) 426-4435
• Pet Poison Helpline® 24-hour animal poison control service at (855) 764-7661

Digoxin

digoxin

Generic Name: digoxin
Brand Name: Lanoxin

Digoxin is used in both human and veterinary medicine to treat a variety of cardiac disease states including congestive heart failure (CHF) and atrial fibrillation. Cats are relatively more sensitive to digoxin toxicity than dogs.

Signs and symptoms of toxicity: Cardiac arrhythmias are common with high or toxic blood levels. Extracardiac clinical signs commonly include mild GI upset, refusal to eat, weight loss and diarrhea.

Please note that vomiting is an adverse effect of digoxin IV injection and is not necessarily a sign that toxicity has occurred.

Toxic consumption: In dogs, acute toxicity has been reported with IV administration of 0.177 mg/kg or more. Chronic therapy may also result in toxicity.

Dogs: Digoxin Toxic Consumption
X-Small
Yorkie, Chihuahua
Small
Pug, Boston Terrier, Poodle
Medium
Beagle, Scottish Terrier
Large
Boxer, Cocker Spaniel
X-Large
Labrador & Golden Retrievers, German Shepherd
XX-Large
Great Dane, St. Bernard
1 – 10 lbs.
(0.45 – 4.6 kg)
11 – 25 lbs.
(5 – 11.4 kg)
26 – 40 lbs.
(11.8 – 18.2 kg)
41 – 70 lbs.
(18.6 – 31.8 kg)
71 – 90 lbs.
(32.3 – 40.9 kg)
91 – 110 lbs.
(41.4 – 50 kg)
dog1 dog2 dog3 dog4 dog7 dog6
> 0.08 mg > 0.8 mg > 2 mg > 3.2 mg > 5.7 mg > 7.3 mg

References:
– Digoxin. In: Plumb’s Veterinary Drugs. Tulsa (OK): Educational Concepts, L.L.C. [updated 1/14; accessed 8/27/15]. https://www.plumbsveterinarydrugs.com/#!/monograph/921
– Papich MG. Saunders Handbook of Veterinary Drugs: Small and Large Animal. 3rd ed. St. Louis, MS: Elsevier Saunders; 2011.

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