Nasonex vs Flunisolide

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For patients with allergies or other types of nasal conditions, certain drugs that reduce inflammation and relieve symptoms can help in managing discomfort. Nasonex and Flunisolide are two such drugs that are prescribed for these conditions. They each impact different aspects of the immune response but both have symptom-relieving effects in patients suffering from seasonal or perennial allergic rhinitis, sinusitis, and nasal polyps. Nasonex (mometasone furoate) is a corticosteroid with potent anti-inflammatory properties, reducing swelling and irritation in the nasal passages. Flunisolide on the other hand, while also being a corticosteroid, it's used primarily to decrease inflammation in the nose due to allergens which helps prevent itching and sneezing.

What is Nasonex?

Mometasone furoate (the generic name for Nasonex) is a newer generation corticosteroid nasal spray that was first approved by the FDA in 1997. It works by reducing inflammation and swelling in the nose, providing relief from allergy symptoms such as sneezing, itching, and a runny or blocked nose. Nasonex is primarily used to treat seasonal allergic rhinitis and perennial allergic rhinitis.

Flunisolide, on the other hand, is an older generation corticosteroid nasal spray. Like Nasonex, it also reduces inflammation and swelling in the nose but it may not be as effective or have a longer duration of action as compared to Nasonex.

Both Nasonex and Flunisolide can cause side effects like dryness or irritation inside the nose; however, due to Mometasone's more selective mechanism of action these side effects are less common with its use than with Flunisolide. The selectivity of Mometasone results in fewer systemic effects making it safer for long-term use.

What conditions is Nasonex approved to treat?

Nasonex is authorized for treatment of the following conditions:

  • Seasonal and perennial allergic rhinitis, often referred to as hay fever
  • Nasal polyps in patients 18 years of age or older
  • Prophylaxis of seasonal allergic rhinitis symptoms in patients 12 years of age or older

Flunisolide, on the other hand, is approved for:

  • Management of symptomatic nasal polyposis
  • Treatment of both seasonal and perennial allergic rhinitis

How does Nasonex help with these illnesses?

Nasonex helps to manage symptoms of allergies by reducing inflammation in the nasal passages. It does this by binding to glucocorticoid receptors, which then suppresses the immune system's response and decreases production of inflammatory mediators. Inflammation is a key component in allergic reactions, often leading to symptoms such as congestion, sneezing, itching and runny nose. Thus, by reducing inflammation with Nasonex use, these symptoms can be better controlled.

Flunisolide also works similarly; it binds to glucocorticoid receptors inhibiting the release of substances that cause inflammation. However, while both medications have demonstrated efficacy in managing allergy symptoms like rhinitis due to their anti-inflammatory properties, there may be differences between them regarding onset time of therapeutic effects or side-effects profile based on individual patient characteristics including age or comorbidities.

Both Nasonex (mometasone) and Flunisolide are corticosteroids used for their potent anti-inflammatory effects but your healthcare provider will help choose what best suits your condition.

What is Flunisolide?

Flunisolide, marketed under the brand names Nasalide and Nasarel among others, is a corticosteroid medication primarily used to treat allergies. It functions by reducing inflammation in the nasal passages which can lead to symptoms like sneezing, itching or runny nose. Flunisolide was first approved by the FDA in 1981 and it's typically available as a nasal spray.

As flunisolide is not an antihistamine drug, it does not block histamine receptors. Its lack of action on histamines means that its side-effect profile is also different from that of antihistamines such as Nasonex. In particular, it does not cause drowsiness or dry mouth (common side effects of many antihistamines). The anti-inflammatory effects of flunisolide can be beneficial for treating allergic rhinitis, especially in patients who do not respond well to typical antihistamine drugs like Nasonex.

What conditions is Flunisolide approved to treat?

Flunisolide is an FDA-approved corticosteroid designed to treat symptoms associated with:

  • Seasonal and perennial allergic rhinitis
  • Non-allergic (vasomotor) rhinitis

It works by reducing inflammation in the nasal passages, offering relief from congestion, sneezing, runny nose or itchy eyes.

How does Flunisolide help with these illnesses?

Flunisolide, like Nasonex, is a corticosteroid that works by reducing inflammation and swelling in the nasal passages. Flunisolide has an active role in mitigating symptoms of allergies such as sneezing, itching and runny or stuffy nose. It functions by inhibiting multiple types of inflammatory cells and decreasing the production of certain chemicals involved in allergic reactions. While both Nasonex and Flunisolide have similar actions, flunisolide might be prescribed when patients do not respond adequately to other corticosteroids like Nasonex or may be used in combination with them for enhanced effectivity against severe allergy symptoms.

How effective are both Nasonex and Flunisolide?

Both mometasone (Nasonex) and flunisolide are corticosteroid nasal sprays that have been approved by the FDA for treating symptoms of allergic rhinitis. They were launched within a decade of each other, with flunisolide becoming available first in 1981 followed by Nasonex in 1997. Both medications work by reducing inflammation in the nasal passages, although they act on different receptors.

The effectiveness of mometasone and flunisolide was directly studied in a double-blind clinical trial in 2000; both drugs showed similar efficacy at managing allergy symptoms such as sneezing, runny nose, itchy or watery eyes and itching of the nose or throat. However, patients receiving Nasonex experienced slightly fewer side effects compared to those treated with flunisolide.

In terms of safety profiles, both mometasone and flunisolide are generally well-tolerated. A review conducted in 2010 found that while both drugs effectively alleviate Nasal Allergy Symptom Scores starting from the first week of treatment, Nasonex had a better safety profile due to its lower incidence rate for epistaxis (nosebleeds). This has helped make Nasonex one among commonly prescribed nasal steroids globally.

A more recent meta-analysis indicated that while there is no significant difference between the two treatments when used for seasonal allergies or perennial allergic rhinitis, some studies suggest that individuals may prefer using mometasone due to its improved delivery device design which could lead to better compliance. Nonetheless, because their mechanisms differ slightly – despite belonging to same class - choice between these two will usually depend on individual patient responses as well as cost considerations.

abstract image of a researcher studying a bottle of drug.

At what dose is Nasonex typically prescribed?

Dosages of Nasonex for adults, including the elderly and adolescents 12 years of age and older, are two sprays (50 mcg/spray) in each nostril once daily (total daily dose of 200 mcg). Once symptoms are controlled, dose reduction to one spray in each nostril (100 mcg/day total dose) may be effective for maintenance. For children aged between 3-11 years old, the usual dosage is one spray in each nostril once a day. If there's no response after several weeks, the dosage can be increased as directed by a healthcare professional but should not exceed two sprays in each nostril per day.

In contrast to Nasonex, Flunisolide nasal solution is recommended at an initial dosage of two sprays (25 mcg/spray) into each nostril twice daily (totaling 200 mcg/day). The maximum total daily dosage should not exceed eight sprays in each nostril per day.

At what dose is Flunisolide typically prescribed?

Flunisolide nasal spray treatment typically begins with a dosage of 2 sprays (50 mcg/spray) in each nostril twice daily, totaling to 200 mcg/day. The dose can then be increased to a maximum of 8 sprays in each nostril per day, divided into two doses and spaced about 12 hours apart. If there is no response to the initial treatment after several weeks, your doctor may choose to increase the dosage for optimal benefits. However, it's crucial not to exceed the recommended maximum dose without consulting with your healthcare provider.

What are the most common side effects for Nasonex?

Common side effects for Nasonex and Flunisolide, both nasal corticosteroids, may include:

  • Headache
  • Nasal irritation or burning
  • Nosebleeds (epistaxis)
  • Stomach upset or nausea
  • Cough
  • Sore throat (pharyngitis)
  • Sinus pain or pressure
  • Sneezing after use of the medication These medications are not usually associated with systemic adverse effects like anxiety, insomnia, tremor, dry mouth etc. However if you experience any unusual symptoms while using these medications it's important to consult your healthcare provider promptly.

abstract image of a patient experiencing side effect

Are there any potential serious side effects for Nasonex?

While both Nasonex and Flunisolide are nasal sprays used to treat symptoms of allergies, they each have their own potential side effects. For Nasonex, these can include:

  • Signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
  • Nasal bleeding that seems heavier than usual or happens often
  • Sores in the nose that won't heal
  • Wheezing, trouble breathing;
  • Vision problems
  • Flu-like symptoms such as chills, fever, body aches

For Flunisolide on the other hand:

  • Unusual tiredness or weakness
  • Swelling ankles/feet
  • Increased thirst/urination
    An immediate medical response is necessary if any severe reactions occur like rash; itching/swelling (especially of the face/tongue/throat); severe dizziness; trouble breathing.

These lists do not contain all possible side effects. If you notice other effects not listed above while using either drug – contact your doctor immediately.

What are the most common side effects for Flunisolide?

Flunisolide, a nasal spray used to treat allergies, has its own set of potential side effects:

  • Nosebleed or sore throat
  • Headache or lightheadedness
  • Nausea or stomach upset
  • Coughing, sneezing, stuffy nose
  • Reduced ability to taste and smell
  • Unusual tiredness or weakness
  • Difficulty sleeping (insomnia) It's important to remember that these side effects are generally mild and usually go away as the body adjusts to the medication. However, if any of these symptoms persist or worsen, it is advisable to seek medical attention promptly.

Are there any potential serious side effects for Flunisolide?

While Flunisolide is generally well-tolerated, certain side effects can occur in rare cases. These may include:

  • Signs of an allergic reaction such as hives; difficulty breathing; swelling of your face, lips, tongue, or throat
  • Severe or ongoing nosebleeds, sinus pain, or irritation in the nose
  • Sores in the nose that won't heal
  • Wheezing, shortness of breath;
  • Vision problems including blurred vision and seeing halos around lights
  • Flu-like symptoms (fever, chills)
  • Increased thirst and urination due to high blood sugar

These are not all the possible side effects one could experience when using Flunisolide. If you feel unwell after use or notice any other unusual symptoms contact your healthcare provider immediately.

Contraindications for Nasonex and Flunisolide?

Just as with any medication, Nasonex and Flunisolide, two common corticosteroid nasal sprays used to treat allergic rhinitis, may cause side effects in some individuals. If you notice an increase in symptoms such as nosebleeds, vision changes, sores in the nose that won't heal or white patches inside the nose or mouth after starting these medications, seek immediate medical attention.

Nasonex and Flunisolide should not be taken if you are using other steroid medicines unless directed by your physician; the combined use of steroids can lead to overuse or adverse effects. Always tell your doctor about all medications you are currently taking; this includes both prescription and over-the-counter drugs along with herbal supplements.

Infections like chickenpox or measles can be more serious for people who are taking a steroid such as Nasonex or Flunisolide. If exposed while on either of these treatments, it is crucial to notify your healthcare provider immediately due to potential complications.

How much do Nasonex and Flunisolide cost?

For the brand name versions of these drugs:

  • The price of one bottle (16.5g, 50 mcg/spray) of Nasonex averages around $240, which can last for about a month if used as directed (2 sprays in each nostril once daily), working out to approximately $8/day.
  • The price of one bottle (25 ml, 0.025% strength) of Nasalide (Flunisolide nasal spray) averages is about $60-$80 depending on your location and pharmacy prices. If used as directed (1 to 2 sprays in each nostril twice daily), a single bottle should last between two weeks to a month making it roughly $2 - $4 per day.

Thus, if you are using higher doses or more frequent applications with Flunisolide, then brand-name Nasonex may be less expensive on a per-day treatment basis when comparing at maximum usage rates. Please note that cost should not be your primary consideration in determining which of these drugs is right for you.

For their generic versions:

  • Mometasone furoate monohydrate (generic version of Nasonex) costs approximately between $100 and $150 per 17 g bottle; this typically lasts for about a month when used as recommended resulting into an approximate cost range from ~$3-$5/day.
  • Generic flunisolide costs around ~$20-$30 for one 25ml spray bottle: given its instructed use this amounts to an estimated cost ranging from ~$1 - ~$2/day depending on frequency and dosage.

Popularity of Nasonex and Flunisolide

Mometasone furoate, commonly known as Nasonex, is a widely-prescribed nasal spray used to treat allergy symptoms such as congestion, sneezing, and runny nose. It was estimated that about 7 million people in the US were prescribed Nasonex or its generic equivalent in 2020. This represented just over 15% of all prescriptions for intranasal corticosteroids.

Flunisolide, another commonly-used intranasal corticosteroid with similar uses to Nasonex, was prescribed to approximately 2.5 million people in the USA in 2020. Flunisolide accounted for roughly around 5% of all prescriptions for this class of medications during the same year.

The usage rates of both these forms have remained relatively steady over the last decade: while there has been a slight increase in prescriptions for flunisolide since it became available as a generic drug (which typically reduces cost), mometasone furoate's popularity remains fairly stable due to its effectiveness and favorable side effect profile.


Nasonex (mometasone furoate) and Flunisolide are both corticosteroids nasal sprays that have been used extensively for the management of allergic rhinitis symptoms. They work by reducing inflammation in the nasal passages, thereby relieving congestion, sneezing, runny nose or itchy or watery eyes. Both drugs are supported by clinical studies indicating their effectiveness.

While Nasonex is often a first-line treatment option due to its once-daily dosing convenience and efficacy in pediatric patients as young as 2 years old, Flunisolide might be considered for patients who prefer lower cost options since it's available in generic form representing significant savings especially for those paying out of pocket.

The side effect profiles of Nasonex and Flunisolide are quite similar; common effects include headache, throat irritation or nosebleeds. However, Nasonex may be less likely to cause an unpleasant taste or smell compared to some other steroids including flunisolide.

Both medications should provide relief from allergy symptoms shortly after they're started but reaching maximum benefit may take up to two weeks with consistent use. As with any medication regimen, individuals using these products must monitor their response closely and seek medical help if they notice worsening symptoms or experience severe side effects.