MOMETASONE: 1,686 Adverse Event Reports & Safety Profile

Mometasone furoate, the active component of mometasone furoate nasal spray, 50 mcg, is an anti-inflammatory corticosteroid having the chemical name, 9,21-Dichloro-11ß,17-dihydroxy-16α-methylpregna-1,4-diene-3,20-dione17-(2 furoate), and the following chemical structure: Mometasone furoate is a white to off-white powder, with an molecular formula of C 27 H 30 Cl 2 O 6 , and a molecular weight of 521.43. It is practically insoluble in water, slightly soluble in methanol, ethanol, and isopropanol; soluble in acetone, chloroform, and methylene chloride; and freely soluble in tetrahydrofuran, acetone and dichloromethane. Its partition coefficient between octanol and water is greater than 5,000. Mometasone furoate nasal spray 50 mcg is a metered-dose, manual pump spray unit containing an aqueous suspension of 0.05% w/w mometasone furoate in an aqueous medium containing benzalkonium chloride, citric acid, glycerin, microcrystalline cellulose and carboxymethylcellulose sodium, polysorbate 80, purified water, and sodium citrate. The pH is between 4.3 and 4.9. structure

AND USAGE Mometasone furoate nasal spray is a corticosteroid indicated for: Prophylaxis of Nasal Symptoms of Seasonal Allergic Rhinitis in adult and pediatric patients 12 years of age and older ( 1.1 ) Treatment of Chronic Rhinosinusitis with Nasal Polyps in adult patients 18 years of age and older ( 1.2 )

1.1 Prophylaxis of Seasonal Allergic Rhinitis Mometasone furoate nasal spray is indicated for the prophylaxis of the nasal symptoms of seasonal allergic rhinitis in adult and pediatric patients 12 years and older.

1.2 Treatment of Chronic Rhinosinusitis with Nasal Polyps Mometasone furoate nasal spray is indicated for the treatment of chronic rhinosinusitis with nasal polyps in adult patients 18 years of age and older.

AND ADMINISTRATION For Nasal Use Only Prophylaxis of Seasonal Allergic Rhinitis in Adult and Pediatric Patients 12 Years of Age and Older: 2 sprays in each nostril once daily ( 2.2 ) Treatment of Chronic Rhinosinusitis with Nasal Polyps in Adults (18 yrs. and older): 2 sprays in each nostril twice daily. 2 sprays in each nostril once daily may also be effective in some patients ( 2.3 )

2.1 Preparation and Administration Administer mometasone furoate nasal spray by the nasal route only.

Initial Priming

Prior to initial use of mometasone furoate nasal spray, the pump must be primed by actuating ten times or until a fine spray appears. The pump may be stored unused for up to 1 week without repriming. Repriming (as needed) If unused for more than 1 week, reprime by actuating two times, or until a fine spray appears.

2.2 Recommended Dosage for Prophylaxis of Seasonal Allergic Rhinitis The recommended dosage for prophylaxis treatment of nasal symptoms of seasonal allergic rhinitis in adult and pediatric patients 12 years and older is mometasone furoate nasal spray 2 sprays (2 sprays deliver a total of 100 mcg of mometasone furoate) in each nostril once daily (total daily dose of 200 mcg). In patients with a known seasonal allergen that precipitates nasal symptoms of seasonal allergic rhinitis, prophylaxis with 2 sprays (2 sprays deliver a total of 100 mcg of mometasone furoate) in each nostril once daily (total daily dose of 200 mcg) is recommended 2 to 4 weeks prior to the anticipated start of the pollen season.

2.3 Recommended Dosage for Treatment of Chronic Rhinosinusitis with Nasal Polyps The recommended dosage for the treatment of chronic rhinosinusitis with nasal polyps in adults 18 years and older is mometasone furoate nasal spray 2 sprays (2 sprays deliver a total of 100 mcg of mometasone furoate) in each nostril twice daily (total daily dose of 400 mcg). A dose of 2 sprays (2 sprays deliver a total of 100 mcg of mometasone furoate) in each nostril once daily (total daily dose of 200 mcg) is also effective in some patients.

Mometasone furoate nasal spray is contraindicated in patients with known hypersensitivity to mometasone furoate or any of its ingredients [see Warnings and Precautions ( 5.3 ), Description ( 11 )]. Patients with known hypersensitivity to mometasone furoate or any of the ingredients of mometasone furoate nasal spray. ( 4 )

REACTIONS The following clinically significant adverse reactions are described elsewhere in labeling: Epistaxis, Ulcerations, Candida albicans Infection, Impaired Wound Healing [see Warnings and Precautions ( 5.1 )] Glaucoma and Cataracts [see Warnings and Precautions ( 5.2 )] Immunosuppression and Risk of Infections [see Warnings and Precautions ( 5.4 )] Hypercorticism and Adrenal Suppression, including Growth Reduction [see Warnings and Precautions ( 5.5 , 5.6 ), Use in Specific Populations ( 8.4 )] The most common adverse reactions (incidence ≥5%) included headache, viral infection, pharyngitis, epistaxis and cough. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Apotex Corp. at 1-800-706-5575 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

Allergic Rhinitis

Adults and pediatric patients 12 years of age and older In controlled U.S. and international clinical studies, a total of 3,210 adult and pediatric patients 12 years and older with allergic rhinitis received treatment with mometasone furoate nasal spray at doses of 50 to 800 mcg/day. The majority of patients (n=2,103) were treated with 200 mcg/day. A total of 350 adult and pediatric patients 12 years and older have been treated for one year or longer. Adverse reactions did not differ significantly based on age, sex, or race. Four percent or less of patients in clinical trials discontinued treatment because of adverse events and the discontinuation rate was similar for the vehicle and active comparators. All adverse reactions (regardless of relationship to treatment) reported by 5% or more of adult and pediatric patients ages 12 years and older who received mometasone furoate nasal spray, 200 mcg/day vs. placebo and that were more common with mometasone furoate nasal spray than placebo, are displayed in Table 1 below.

Table

1: Adult and Pediatric Patients 12 Years and Older – Adverse Reactions from Controlled Clinical Trials in Seasonal Allergic and Perennial Allergic Rhinitis (Percent of Patients Reporting)

Mometasone Furoate Nasal Spray

200 mcg (n = 2,103) % Vehicle Placebo (n = 1,671) % Headache 26 22 Viral Infection 14 11 Pharyngitis 12 10 Epistaxis/Blood-Tinged Mucus 11 6 Coughing 7 6 Upper Respiratory Tract Infection 6 2 Dysmenorrhea 5 3 Musculoskeletal Pain 5 3 Sinusitis 5 3 Other adverse reactions which occurred in less than 5% but greater than or equal to 2% of adult and pediatric patients (ages 12 years and older) treated with mometasone furoate nasal spray 200-mcg/day (regardless of relationship to treatment), and more frequently than in the placebo group included: arthralgia, asthma, bronchitis, chest pain, conjunctivitis, diarrhea, dyspepsia, earache, flu-like symptoms, myalgia, nausea, and rhinitis.

Chronic

Rhinosinusitis with Nasal Polyps Adults 18 years of age and older In controlled clinical studies, the types of adverse reactions observed in patients with chronic rhinosinusitis with nasal polyps were similar to those observed in patients with allergic rhinitis. A total of 594 adult patients (ages 18 to 86 years) received mometasone furoate nasal spray at doses of 200 mcg once or twice daily for up to 4 months for treatment of chronic rhinosinusitis with nasal polyps. The overall incidence of adverse reactions for patients treated with mometasone furoate nasal spray was comparable to patients with the placebo except for epistaxis, which was 9% for 200 mcg once daily, 13% for 200 mcg twice daily, and 5% for the placebo. Nasal ulcers and nasal and oral candidiasis were also reported in patients treated with mometasone furoate nasal spray primarily in patients treated for longer than 4 weeks.

6.2 Post-Marketing Experience The following adverse reactions have been identified during the post-marketing period for mometasone furoate nasal spray: nasal burning and irritation, anaphylaxis and angioedema, disturbances in taste and smell, nasal septal perforation, and vision blurred. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

AND PRECAUTIONS Epistaxis, nasal ulceration, Candida albicans infection, nasal septal perforation, impaired wound healing. Monitor patients periodically for signs of adverse effects on the nasal mucosa. Avoid use in patients with recent nasal ulcers, nasal surgery, or nasal trauma. ( 5.1 ) Glaucoma and cataracts. Consider referral to an ophthalmologist in patients who develop ocular symptoms or use mometasone furoate nasal spray long term. ( 5.2 ) Potential worsening of existing tuberculosis; fungal, bacterial, viral, or parasitic infections; or ocular herpes simplex. More serious or even fatal course of chickenpox or measles in susceptible patients. Use caution in patients with the above because of the potential for worsening of these infections. ( 5.4 ) Hypercorticism and adrenal suppression with higher than recommended dosages or at the regular dosage in susceptible individuals. If such changes occur, discontinue mometasone furoate nasal spray slowly. ( 5.5 ) Potential reduction in growth velocity in children. Monitor growth routinely in pediatric patients receiving mometasone furoate nasal spray. ( 5.6 , 8.4 )

5.1 Local Nasal Adverse Reactions Epistaxis Epistaxis was observed more frequently in patients with allergic rhinitis and patients with chronic rhinosinusitis with nasal polyps who received mometasone furoate nasal spray than those who received placebo <span class="opacity-50 text-xs">[see Adverse Reactions ( 6.1 )]</span>.

Candida Infection

Localized infections of the nose and pharynx with Candida albicans has occurred from nasal administration of mometasone furoate. When such an infection develops, use of mometasone furoate nasal spray should be discontinued and appropriate local or systemic therapy instituted, if needed.

Nasal Septum Perforation

Instances of nasal septum perforation occurred in patients following the nasal application of corticosteroids, including mometasone furoate nasal spray. As with any long-term topical treatment of the nasal cavity, patients using mometasone furoate nasal spray over several months or longer should be examined periodically for possible changes in the nasal mucosa.

Impaired Wound Healing

Because of the inhibitory effect of corticosteroids on wound healing, patients who have experienced recent nasal septum ulcers, nasal surgery, or nasal trauma should not use a nasal corticosteroid until healing has occurred.

5.2 Glaucoma and Cataracts Glaucoma and cataracts may be reported with systemic and topical (including nasal, inhaled and ophthalmic) corticosteroid use. Consider referral to an ophthalmologist in patients who develop ocular symptoms or use mometasone furoate nasal spray long term <span class="opacity-50 text-xs">[see Adverse Reactions ( 6 )]</span>.

5.3 Hypersensitivity Reactions Hypersensitivity reactions including instances of wheezing may occur after the nasal administration of mometasone furoate monohydrate. Discontinue mometasone furoate nasal spray if such reactions occur [ see Contraindications (4) ] .

5.4 Immunosuppression and Risk of Infections Persons who are on drugs which suppress the immune system are more susceptible to infections than healthy individuals. Chickenpox and measles, for example, can have a more serious or even fatal course in nonimmune children or adults on corticosteroids. In such children or adults who have not had these diseases, particular care should be taken to avoid exposure. How the dose, route, and duration of corticosteroid administration affect the risk of developing a disseminated infection is not known. The contribution of the underlying disease and/or prior corticosteroid treatment to the risk is also not known. If exposed to chickenpox, prophylaxis with varicella zoster immune globulin (VZIG) may be indicated. If exposed to measles, prophylaxis with pooled intramuscular immunoglobulin (IG) may be indicated. (See the respective Prescribing Information for VZIG and IG.) If chickenpox develops, treatment with antiviral agents may be considered. Corticosteroids should be used with caution, if at all, in patients with active or quiescent tuberculous infection of the respiratory tract, or in untreated fungal, bacterial, systemic viral infections, or ocular herpes simplex because of the potential for worsening of these infections.

5.5 Hypercorticism and Adrenal Suppression Hypercorticism and adrenal suppression may occur when nasal corticosteroids, including mometasone furoate nasal spray, are used at higher-than-recommended dosages <span class="opacity-50 text-xs">[see Dosage and Administration ( 2 )]</span> or in patients at risk for such effects. If such changes occur, the dosage of mometasone furoate nasal spray should be discontinued slowly, consistent with accepted procedures for discontinuing oral corticosteroid therapy.

5.6 Effect on Growth Corticosteroids, including mometasone furoate nasal spray may cause a reduction in growth velocity when administered to pediatric patients. Routinely, monitor the growth of pediatric patients receiving mometasone furoate nasal spray. To minimize the systemic effects of nasal corticosteroids, including mometasone furoate nasal spray, titrate each patient’s dose to the lowest dosage that effectively controls his/her symptoms <span class="opacity-50 text-xs">[see Use in Specific Populations ( 8.4 )]</span>.

INTERACTIONS No formal drug-drug interaction studies have been conducted with mometasone furoate nasal spray. Inhibitors of Cytochrome P450 3A4: Studies have shown that mometasone furoate is primarily and extensively metabolized in the liver of all species investigated and undergoes extensive metabolism to multiple metabolites. In vitro studies have confirmed the primary role of cytochrome CYP3A4 in the metabolism of this compound. Concomitant administration of CYP3A4 inhibitors may inhibit the metabolism of, and increase the systemic exposure to, mometasone furoate and potentially increase the risk for systemic corticosteroid side effects. Caution should be exercised when considering the coadministration of mometasone furoate nasal spray with long-term ketoconazole and other known strong CYP3A4 inhibitors (e.g., ritonavir, cobicistat-containing products, atazanavir, clarithromycin, indinavir, itraconazole, nefazodone, nelfinavir, saquinavir, telithromycin) [see Clinical Pharmacology ( 12.3 )]. Consider the benefit of coadministration versus the potential risk of systemic corticosteroid effects, in which case patients should be monitored for systemic corticosteroid side effects.