When should I give my dog an antihistamine pill for allergies?

Most OTC antihistamines can be used in dogs; however you should never give any medications to your dog without the advice of your veterinarian. Allergies can be frustrating to diagnose since they can have multiple causes (inhaled, food, contact). Schedule an appointment with your veterinarian. Discuss food elimination trials and allergy testing and if antihistamine use is indicated, he or she can give you a proper dose, The medication may provide some relief but your task is to try to determine what your dog is allergic to and decrease or eliminate it. Monitor her for side effects including lethargy and weakness, and if you see those signs, have her seen by a vet right away. Best of luck.

Many allergy medications are safe to give to dogs over the counter. It is always best to double check with your veterinarian regarding the dose and the drug you are about to give. What you have in the picture is generic system and is quite safe for dogs. The dose that I typically use is 0.5mg/kg of body weight every 24 hours. My own dog used to get this. He was 20lb and his dose was 4.5mg every 24 hours. I rounded this to 5mg every 24 hours to make it easier for dosing. So that would be 1/2 tablet every 24 hours. There are other options for allergies as well if antihistamines are not effective but your veterinarian will have to prescribe these. Please let me know if you have any other questions and I would be more than happy to help!

Most OTC antihistamines can be used in dogs, however you should **never** give any medications to your dog without the advice of your veterinarian. Legally though, we cannot direct you to medicate your pet in the absence of a physical exam and a VCPR (veterinarian-client-patient-relationship). [Allergies](https://www.petcoach.co/dog/condition/canine-allergies) can be frustrating to diagnose since they can have multiple causes ([environmental](https://www.petcoach.co/article/food-allergies-vs-environmental-allergies-whats-the-difference), [food](https://www.petcoach.co/dog/condition/food-allergies), [flea bites](https://www.petcoach.co/dog/condition/flea-allergy), etc.). Schedule an appointment with your veterinarian. Discuss [food elimination trials](https://www.petcoach.co/article/food-trials-for-allergies-in-pets-what-to-expect) and [allergy testing](https://www.petcoach.co/article/allergy-testing-immunotherapy-in-dogs) and if antihistamine use is indicated, he or she can give you a proper dose, The medication may provide some relief but your task is to try to determine what your dog is allergic to and decrease or eliminate it.

As long as the discharge from the nose is clear, then yes, you can try an antihistamine. Priton (chlorpheneramine) is not the best. You are better off using loratadine - 10mg by mouth once a day (should be one tablet). ( https://www.amazon.co.uk/Haylief-Loratadine-Hayfever-Allergy-Tablets/dp/6041257966 ) If the discharge is discolored (green or yellow) or he is acting ill in any other way (not eating, coughing, lethargic, vomiting, etc) then he should see a vet. Hope this helps. Best wishes.

You can give her an antihistamine tablet. This is probably an allergic reaction due to an insect bite or a plant outside. those reactions tend to resolve within 48 hours without treatment. if the swelling becomes too large or if Arturo is lethargic, take her to the vet in order to get an antihistamine injection.

Yes, there is an OTC in the form of antihistamines, but legally I cannot recommend it for you to use on her, nor can I give you the dose. That's because doing so requires a veterinary client patient relationship which cannot be achieved via an internet forum. In addition, I cannot say for certain if a specific drug is safe for your dog. I would give your vet a call to get the name of the OTC option as well as the dosage.

Hi and thanks for your request. Once daily (once every 24 hours, so every day at 2am) would be correct. The dosage you are giving is on the higher range, make sure you do not exceed 20mg per day. https://www.petcoach.co/canigive/dog/zyrtec/