According to expert advice the proper dosage depends on a number of different factors including the size weight and breed of your dog check with your vet first if you are unsure.
Antihistamine for dogs dosage.
The merck veterinary manual recommends administering 2 4mg of benadryl per kilogram of body weight.
But the safest way to give the proper dose is to ask your veterinarian.
In general 1 2 a 4mg tablet or 5ml is prescribed for smaller breeds while 1 2 tablets or 10 20ml of liquid can be given to larger dogs.
Before you give your dog an antihistamine make sure you have the right amount.
Antihistamine therapy in the dog dosage by body weight generic trade names forms up to 10 lbs 10 20 lbs 20 30 lbs 30 50 lbs over 50 lbs interval chlorpheniramine chlor trimeton 4 mg tablet tab 1 tab 2 tab 2 tab 3 tab 2 3x daily diphenhydramine benadryl 2 5 mg ml syrup 1 tsp 2 3x daily.
Available over the counter most benadryl tablets are 25 mg each but it is important to always check the label a children s benadryl.
Antihistamine dosage for dogs.
It also depends on the size of the dog.
Most diphenhydramine tablets are 25 mg which is the size used for a 25 pound dog.
The best way to determine the correct benadryl dosage for dogs is to consult your veterinarian.
The standard dosage for oral benadryl for dogs is 1 mg per pound of body weight given 2 3 times a day.
In the tables below are some typical recommended dosages for various antihistamines.
Like most medications the given dose is based on the dog s body weight.
Determining the right benadryl dose.