How Antihistamines Treat Allergies
Antihistamines are typically the first medication to try for an allergy. They help reduce or block histamines, which stops allergy symptoms. They do not relieve every symptom, but they help with seasonal, indoor and food allergies.
Types of Antihistamines
They are available in all types of forms, such as tablets, capsules, liquids, nasal sprays and eye drops. Most antihistamines can cause drowsiness and need to be taken frequently. Newer antihistamines are made to target more specific receptors, which decreases drowsiness and lessens the need for more doses.
Side Effects of Antihistamines
Some side effects with antihistamines include: dry mouth, drowsiness, dizziness, nausea, vomiting, restlessness, trouble peeing, blurred vision and confusion. These side effects are more common in older people. You will need to speak with your allergist about any health conditions that you may have before beginning treatment. Your allergist will also help you pick the right type of antihistamine for you.