When to give your dog a antihistamine?

Antihistamines can be given to dogs to alleviate allergic reactions, such as itching, swelling, or hives caused by environmental allergens like pollen or insect bites. Always consult your veterinarian before administering any medication, as they can recommend the appropriate type and dosage based on your dog's specific needs and health conditions. It's important to monitor your dog for any adverse reactions after giving an antihistamine.