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Astelin (Azelastine)

Also Known as Rhinolast

Prescription requiredOnly Available By Prescription
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What is Generic?

What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


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Astelin nasal spray, a prescription medication for allergic rhinitis treatment, provides relief from symptoms such as runny, stuffy, or itchy nose, sneezing, and post-nasal drip caused by allergic reactions or other triggers of allergic rhinitis. Azelastine, an antihistamine, blocks histamine production, thereby preventing the inflammation that causes symptoms of allergic rhinitis. Purchase Astelin nasal spray from Canada to obtain the best price.

What is Allergic Rhinitis?

Allergic rhinitis is a condition where the immune system reacts to allergens that enter the body, leading to an inflammatory response with histamine production. This response causes sneezing, congestion, itchy nose, and sore throat. Common allergens include pollen, pet dander, mold, dust mites, and others. It is estimated that 15 to 20% of the population regularly experiences allergic rhinitis.

Fact Table
Formula C22H24ClN3O
License US DailyMed
Bioavailability 40%
Legal status Rx-Only
Chemical Name Azelastine
Elimination half-life 22 hours
Dosage (Strength) 137mcg 140 doses 22ml, 140 mcg/dose (70 dose)
Pregnancy Consult Doctor
Brands Astelin
Protein binding 88%
PubChem CID 2267
MedlinePlus a603009
ChEBI 2950
ATC code R01AC03
DrugBank DB00972
KEGG D07483
Routes of administration Nasal spray

Buy Astelin (Azelastine) online from online Canadian Pharmacy |


The standard dosage for Astelin nasal spray is one or two sprays daily, administered into both nostrils as indicated in your prescription. Gently blow your nose each time before administering the medication. After using, breathe in gently and avoid tilting your head back to prevent a bitter taste in your mouth.


The active ingredient in Astelin nasal spray is Azelastine.


Inform your doctor of any history of kidney problems before starting on Astelin generic nasal spray. The medication may cause drowsiness. Keep the spray away from your eyes and mouth. Perform a test spray pump if you have not used the medication for more than three days. Be aware of the medication's expiry date.


Negative drug interactions may occur between Astelin nasal spray and other prescription medications, including albuterol, fexofenadine, duloxetine, fluticasone, gabapentin, hydrochlorothiazide, levothyroxine, atorvastatin, lisinopril, pregabalin, metformin, guaifenesin, mometasone, esomeprazole, omeprazole, prednisone, montelukast, levothyroxine, tramadol, trazodone, and cetirizine. Inform your doctor of all medications you are currently taking before obtaining a prescription and purchasing Astelin nasal spray online.

Side Effects

Possible side effects of Astelin include drowsiness, tiredness, nasal discomfort, sneezing fits, runny nose or nosebleeds, dry mouth, red eyes, and headache. If you experience side effects, consider discontinuing use and consult with your doctor to discuss alternative nasal allergy relief medications.

Frequently Asked Questions about Astelin (Azelastine)

What is Astelin used for?

Astelin is a prescription nasal spray used to relieve allergy symptoms like itchy, runny nose, sneezing, and congestion.

How does Astelin work?

Astelin blocks histamine, a chemical released during allergic reactions, reducing allergy symptoms.

How long does it take for Astelin to work?

Some relief may come within 30 minutes, but full effects might take up to 2 weeks of regular use.

How often should I use Astelin?

Follow your doctor's instructions. Typically, it's one spray in each nostril twice daily. Don't exceed the recommended dosage.

Can I use Astelin with other allergy medications?

Talk to your doctor about potential interactions with other medications, including over-the-counter products.

Does Astelin cause drowsiness?

Drowsiness is uncommon, but possible. Avoid driving or operating machinery if you experience it.

Are there any serious side effects of Astelin?

Stop using Astelin and seek immediate medical attention if you experience severe allergic reactions, difficulty breathing, or vision changes.

Can I use Astelin if I'm pregnant or breastfeeding?

Discuss with your doctor before using Astelin if you're pregnant or breastfeeding.

What happens if I miss a dose of Astelin?

Take the missed dose as soon as possible, unless it's near the time for your next dose. Don't double up on doses.

How should I store Astelin?

Keep it upright at room temperature, away from heat and direct sunlight. Don't freeze or puncture the container.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.