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Nasonex (Mometasone)

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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Nasonex is an allergic rhinitis treatment medication available by prescription. It is used to provide allergy sufferers relief from sinus inflammation and symptoms, including irritation, sneezing, itchy or runny nose, and congestion. It is administered as a nasal spray directly into the sinuses and this direct administration contributes to the medication being fast acting and a good choice for those who experience severe allergy attacks. Note that Nasonex generic will contain 40 fewer doses than the 140 that come in the branded Nasonex nasal spray bottle. Buy Nasonex from Canada and Canpharm and get the best price on it.

What is Allergic Rhinitis?

Allergic rhinitis is a disorder where a person has their immune system react to an allergen that enters the body and the inflammatory response with histamine production leads to sneezing, congestion, itchy nose, and sore throat. Allergens can include pollen, pet dander, mold, dust mites and others and estimates are that 15 to 20% of the population regularly experience allergic rhinitis.

Fact Table
Formula C22H28Cl2O4
License US DailyMed
Bioavailability Unknown
Legal status Prescription Drugs
Chemical Name Mometasone
Elimination half-life 5.8 hours
Dosage (Strength) 50mcg Nasal Spray
Pregnancy Consult Doctor
Brands Nasonex
Protein binding 98% to 99%
PubChem CID 441335
MedlinePlus a687014
ChEBI 6970
ATC code D07AC13
DrugBank DB00764
KEGG D08227
Routes of administration inhalation (nasal spray)

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Standard dosage for Nasonex nasal spray is to place 2 sprays into each nostril 1x per day. For people using Nasonex for seasonal allergy relief your doctor may recommend starting on the medication 2 weeks before start of the allergy season.


The active ingredient in Nasonex is Mometasone


Let your doctor know of any history of eye problems like glaucoma or cataracts, herpes or tuberculosis, or chronic infections in the nose / sinuses before starting on Nasonex

Users of this medication should avoid others with infectious diseases like chickenpox, measles, flu, or COVID-19

Using corticosteroid medications may make it more challenging for your body to respond to physical stress

Long-term frequent use may slow a child's growth

Be aware of medication expiry date


Negative drug interactions may occur between Nasonex and other Rx medications, including albuterol, atorvastatin, diphenhydramine, buspirone, cetirizine, duloxetine, doxycycline, fexofenadine, fluticasone, gabapentin, escitalopram, atorvastatin, losartan, metformin, montelukast, guaifenesin, omeprazole, pantoprazole, prednisone, montelukast, trazodone.

Let your doctor know of all medications you are currently taking before getting a prescription and proceeding to buy Nasonex online

Side Effects

Nasonex side effects may occur, and some users may experience nose / throat dryness or irritation, bloody mucus or phlegm, and nosebleeds. If side effects are experienced, you may want to stop use and meet with a doctor again to discuss allergic rhinitis medication alternatives.

Frequently Asked Questions about Nasonex

Is Nasonex the same as Flonase?

No, Nasonex is different from Flonase. Both are corticosteroid nasal sprays and work similarly, but Nasonex is an Rx medication that requires a prescription and Flonase is an OTC medication that can be purchased without a prescription.

Can I use Nasonex every day?

Due to the fact that this is a steroidal medication you should not use it any more than is necessary, but if seasonal allergies mean you experience allergic rhinitis daily then you can use this medicated nasal spray every day.

How long does Nasonex stay in your system?

Mometasone will be in your system for 18 to 24 hours depending on a person's metabolic rate.

Does Nasonex raise blood pressure?

Elevated blood pressure has been seen in female users over the age of 60 who are using Nasonex upwards of 3 or 4 times a week, and it is especially common in those who are also using Singulair.

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.