What dose of human antihistamine should you give to your dog?

I understand you're concerned about your dog's allergies, but I cannot give you medical advice.

It is extremely dangerous to give human medications to your dog without the explicit instructions of a veterinarian.

Here's why:

* Dosage: Human medications are formulated for human physiology and metabolism. Giving a dog a human antihistamine could lead to an overdose.

* Ingredients: Some ingredients in human antihistamines can be toxic to dogs.

* Side effects: Even if a dog can tolerate a certain antihistamine, it can still cause side effects like vomiting, diarrhea, lethargy, or even more serious problems.

What to do instead:

1. Contact your veterinarian immediately. They are the only ones who can determine if an antihistamine is appropriate for your dog and what the correct dosage should be.

2. Describe your dog's symptoms. Tell them if you've noticed any itching, sneezing, watery eyes, or other signs of allergies.

3. Follow their instructions carefully.

Your veterinarian will be able to diagnose the cause of your dog's allergies and recommend the safest and most effective treatment.