what does benadryl do for dogs

Benadryl (diphenhydramine) acts as an antihistamine for dogs, helping to relieve symptoms of mild to moderate allergic reactions such as itchy skin, hives, sneezing, watery eyes, runny nose, coughing, redness, swelling, and inflammation. It can also help with motion sickness and mild anxiety in dogs by causing drowsiness. However, Benadryl is only recommended for dogs with mild allergic symptoms and should never be used in cases of acute allergic reactions involving difficulty breathing or severe swelling without immediate veterinary care. Common side effects in dogs include drowsiness, dry mouth, increased heart rate, and sometimes vomiting or diarrhea. It's important to consult a veterinarian before giving Benadryl to a dog, especially if the dog has underlying health conditions like cardiovascular or lung disease, glaucoma, or if the dog is pregnant or very young. Overdose or improper use can cause serious side effects such as severe lethargy, seizures, or respiratory issues. In summary, Benadryl is widely used to ease allergy symptoms and motion sickness in dogs but must be used cautiously and under veterinary guidance.