Allergy treatment can include three different treatment strategies: Avoidance of allergens, medication options to treat allergic reactions and/or immunotherapy (allergy shots). Antihistamines or allergy medications, whether prescription or over-the-counter (otc) are used to treat allergy conditions and symptoms, such as itchy, watery eyes, a runny nose, scratchy throat and a รขโ‚ฌยฆ