2. What are Antihistamines For?

Antihistamine tablets start to relieve allergy symptoms within 30 minutes. It helps dogs with itchy or irritated skin, insect and flea bites, bee stings, and vaccine reactions. It also relieves hay fever symptoms such as sneezing, coughing, or a runny nose. Sometimes antihistamines help dogs with asthma, insomnia, car sickness, nausea, and anxiety.

sneezing, coughing, hay fever, asthma nimis69 / Getty Images

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