My pet ate Lexapro. Is this antidepressant toxic to dogs or cats?

Duke is 80lbs, so about 36.4kg. He ingested 0.55mg/kg of Lexapro. With doses as low as 0.3mg/kg, you can see incoordination and lethargy, although there is typically no toxic damage to organs. To be safe, if Duke ate the Lexapro within the past 2 hours, I would take him to your vet now to induce vomiting. If it's been longer than 2 hours, you will have to monitor him for signs of toxicity (tremors, incoordination, seizures, lethargy), and if you see any of those signs, take him to a vet right away.

Animals can show signs of toxicity after ingesting 1.5 mg per kilogram of body weight and Hunter may have ingested over 7 mg per kg. I would be concerned about the potential for serotonin syndrome secondary to this medication. It could cause agitation, high heart rate or blood pressure, muscle tremors or seizures. I would recommend seeing an emergency veterinarian to discuss treatment. Attempting to induce vomiting might be recommended if he ate the pill recently, but it can be difficult to get cats to vomit. Otherwise the recommended treatment would probably be IV fluids and monitoring in the hospital.

This is about a 5-fold overdose for your cat. Please take her to your vet right away. He will have to make your cat regurgitate the capsule. At overdose with 20 mg/kg Clomicalm (5 times the maximum therapeutic dose), bradycardia and arrhythmias (atrioventricular node block and ventricular escape beats) were observed approximately 12 hours after dosing in dogs. Cats are usually more sensitive to medications, so this may be more toxic. Please take your kitty to your vet now.

Mirtazapine does have a side effect of drowsiness or sedation in pets. It is commonly used in cats as an appetite stimulant. 30mg would be 4 times higher than I normally use, and this overdosage can cause: 57% vocalizing, 38% agitated, 23% vomiting, 21% tachycardic, 15% ataxic and 11% lethargic. The symptoms can last a little longer than 72 hours. As long as Dolly is still eating and drinking normally, I would continue to watch her. If the she is still not completely normal in a day or two, she may need a checkup with a vet.

Most Levothyroxine tablets come in 0.1-0.9mg dosages, so I am not sure why your pet is on a full 5mg dosage. If this is not a typo, then this is a pretty hefty dosage for a cat to receive if she surely got 2.5mg's. However, severe life threatening symptoms from a single overdose are less likely than with chronic overdosing. Some signs you may see are: Vomiting, diarrhea, hyperactivity to lethargy, hypertension, tachycardia, tachypnea, dyspnea, and abnormal pupillary light reflexes. It can take 1-9 hrs for absorption to occur. Then the drug should be mostly out of her system 12-24 hrs. In most cases this is not an emergency situation, but you can see the symptoms I mentioned above, which should be treated with supportive care through your vet. This is a tough one indeed, but it is likely that Kilala will be ok, since I assume that the dosage you gave has to be incorrect based on the typical dosage that dogs receive (between 0.1-0.9mg). I hope that everything works out well for your pet Kilala. Best wishes and take care!

0.125mg/lb (0.25mg/kg approx) is the recommended upper dose so some severe and possibly life threatening sedation could potentially occur. I would recommend getting them to an emergency vet for supportive treatment and monitoring until they can clear the drug out of their system; iv fluids, maintaining body temperature and possibly the administration of an antidote may be required

Ativan can be given up to a dosage of 0.0.5 mg per 1lb, meaning she got the maximum therapeutic dosage, it's not likely to be toxic is she ate only one tablet but she will likely be sedated in the next 8 hours (she will most likely go to sleep).