Azelastine has been evaluated in studies for treating nasal allergies. In these studies, the drug helped decrease the following symptoms:
- Runny nose
- Itchy nose
- Watery eyes
- The need to blow the nose.
Studies have shown that the effects of azelastine are felt within 3 hours and last at least 12 hours. Studies have also shown that the drug is effective in treating vasomotor rhinitis (nasal symptoms caused by irritants, not allergies). The medication decreased the following symptoms:
- Runny nose
- Nasal congestion
- Postnasal drip (nasal mucus dripping down the back of the throat).
General considerations for when and how to take the medication include the following:
- Azelastine comes in the form of a nasal spray. It is usually taken twice a day.
- The first time you use each bottle of azelastine, you will need to prime the pump by spraying until a fine mist appears. If you have not used the bottle within the last three days, you may have to re-prime the pump.
- Blow your nose before each dose. Breathe in gently while spraying the medicine into your nose. Do not try to inhale the spray or breathe in too deeply, as azelastine works when it comes into contact with the inside surfaces of the nose, not the throat or lungs.
- Do not tip your head back immediately after taking azelastine, as this increases the chance of experiencing a bitter taste.
- For the medication to work properly, it must be taken as prescribed. Azelastine will not work if you stop taking it.