What it is used for
- Hay fever and allergic rhinitis (nasal spray)
- Nasal congestion, sneezing, itching, and runny nose from allergy
- Allergic eye symptoms — itchy, red, watery eyes (eye drops)
- Year-round (perennial) nasal allergy symptoms
How it works
Azelastine blocks histamine directly in the nose or eyes, quickly easing allergy symptoms such as itching, sneezing, watering, and a runny or blocked nose.
How it is taken
Available as a nasal spray and eye drops, and combined with a steroid in some nasal sprays. It is applied directly to the nose or eyes and can work fairly quickly. Use it exactly as your doctor, pharmacist, or the label directs.
No doses here on purpose. The right strength and schedule depend on you — only a doctor or pharmacist should set them. Always follow your prescription and the label.
Common side effects
- A bitter or unpleasant taste after using the nasal spray
- Nasal irritation or mild nosebleeds
- Drowsiness in some people
- Headache
- Eye irritation or stinging (drops)
Serious effects — get help
- Signs of a severe allergic reaction (swelling, breathing difficulty)
- Severe or persistent nosebleeds
- Severe eye pain or vision changes
If a reaction is severe — for example trouble breathing, swelling of the face or throat, or collapse — go to the nearest emergency room now or call your local emergency number. Do not wait for an online consultation.
Interactions to watch
- Alcohol (may add to any drowsiness)
- Other sedating medicines
- Other antihistamines or combination allergy products
Who should take care
- Tell your clinician if you are pregnant, planning pregnancy, or breastfeeding
- It can cause drowsiness in some people — see how it affects you before driving
- Tilt your head forward and aim the spray correctly to reduce the bitter taste and nosebleeds
- Avoid if allergic to azelastine