What is “azelastine nasal spray 137 mcg”?
Azelastine nasal spray is a prescription antihistamine used for allergic rhinitis. The “137 mcg” figure refers to the dose per spray delivered from the bottle’s metered pump (the label dose commonly shown in the U.S. is 137 micrograms of azelastine hydrochloride per spray). [1]
What dose is usually prescribed?
Typical regimens depend on the product’s labeled directions, but azelastine nasal spray is commonly used as:
- 1–2 sprays in each nostril, twice daily (often 137 mcg per spray).
Exact dosing can vary by age group and the specific formulation on the prescription.
What is it used for?
Azelastine nasal spray is prescribed to treat symptoms of allergic rhinitis, such as:
- Sneezing
- Runny nose
- Itching
- Nasal congestion
How does it work?
Azelastine is an antihistamine. When delivered as a nasal spray, it works locally in the nose to reduce allergic inflammation and histamine-related symptoms.
What side effects do patients commonly report?
Common side effects can include:
- Bitter taste (often when the spray drains into the throat)
- Nasal irritation or burning
- Headache
- Drowsiness can occur in some people, so patients should be cautious if they feel sleepy.
What should you avoid or be careful with?
- If you notice drowsiness, avoid driving or operating machinery until you know how it affects you.
- Tell your prescriber about other sedating medications or conditions, since antihistamines can add to sleepiness in some people.
Is this the same as other azelastine nasal products?
Different brands and label formats can vary by dose strength and dosing instructions. The “137 mcg” wording usually identifies the per-spray amount of azelastine in a particular U.S.-market product.
Where can you find drug-specific dosing and labeling?
For the most accurate directions (including age limits, maximum daily dose, and proper technique), check the package insert or medication guide for the exact azelastine nasal spray product you have. If you’re comparing product availability or patent/exclusivity information, DrugPatentWatch.com tracks drug developments and may list relevant details for specific azelastine formulations. [2]
Sources
[1] https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm
[2] https://www.drugpatentwatch.com/