Ipratropium

INDICATIONS AND USAGE: Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) is indicated for the symptomatic relief of rhinorrhea associated with the common cold or seasonal allergic rhinitis for adults and children age 5 years and older. Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) does not relieve nasal congestion or sneezing associated with the common cold or seasonal allergic rhinitis. The safety and effectiveness of the use of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) beyond four days in patients with the common cold or beyond three weeks in patients with seasonal allergic rhinitis has not been established.

DOSAGE AND ADMINISTRATION: For Symptomatic Relief of Rhinorrhea Associated with the Common Cold: The recommended dose of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) is two sprays (84 mcg) per nostril three or four times daily (total dose 504 to 672 mcg/day) in adults and children age 12 years and older. Optimum dosage varies with response of the individual patient. The recommended dose of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) for children age 5-11 years is two sprays (84 mcg) per nostril three times daily (total dose of 504 mcg/day). The safety and effectiveness of the use of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) beyond four days in patients with the common cold have not been established. For Symptomatic Relief of Rhinorrhea Associated with Seasonal Allergic Rhinitis: The recommended dose of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) is two sprays (84 mcg) per nostril four times daily (total dose 672 mcg/day) in adults and children age 5 years and older. The safety and effectiveness of the use of Ipratropium Bromide Nasal Solution 0.06% (Nasal Spray) beyond three weeks in patients with seasonal allergic rhinitis have not been established. Initial pump priming requires seven sprays of the pump. If used regularly as recommended, no further priming is required. If not used for more than 24 hours, the pump will require two sprays, or if not used for more than seven days, the pump will require seven sprays to reprime. Avoid spraying into eyes.

WARNINGS AND PRECAUTIONS Not indicated for the initial treatment of acute episodes of bronchospasm where rescue therapy is required for rapid response ( 5.1 ) Hypersensitivity reactions including anaphylaxis: Discontinue ATROVENT HFA at once and consider alternative treatments ( 5.2 ) Paradoxical bronchospasm: Discontinue ATROVENT HFA and consider other treatments if paradoxical bronchospasm occurs ( 5.3 ) Ocular effects: Use with caution in patients with narrow-angle glaucoma and instruct patients to consult a physician immediately if signs or symptoms of narrow-angle glaucoma develop ( 5.4 ) Urinary retention: Use with caution in patients with prostatic hyperplasia or bladder-neck obstruction and instruct patients to consult a physician immediately if signs or symptoms of urinary retention develop ( 5.5 ) 5.1 Use for Maintenance Treatment Only ATROVENT HFA is a bronchodilator for the maintenance treatment of bronchospasm associated with COPD and is not indicated for the initial treatment of acute episodes of bronchospasm where rescue therapy is required for rapid response. 5.2 Hypersensitivity Reactions, Including Anaphylaxis Hypersensitivity reactions including urticaria, angioedema, rash, bronchospasm, anaphylaxis, and oropharyngeal edema may occur after the administration of ATROVENT HFA. In clinical trials and postmarketing experience with ipratropium-containing products, hypersensitivity reactions such as skin rash, pruritus, angioedema of tongue, lips and face, urticaria (including giant urticaria), laryngospasm and anaphylactic reactions have been reported [ see Adverse Reactions (6.1 , 6.2) ]. If such a reaction occurs, therapy with ATROVENT HFA should be stopped at once and alternative treatment should be considered [ see Contraindications (4) ] . 5.3 Paradoxical Bronchospasm ATROVENT HFA can produce paradoxical bronchospasm that can be life threatening. If this occurs, treatment with ATROVENT HFA should be stopped and other treatments considered. 5.4 Ocular Effects ATROVENT HFA is an anticholinergic and its use may increase intraocular pressure. This may result in precipitation or worsening of narrow-angle glaucoma. Therefore, ATROVENT HFA should be used with caution in patients with narrow-angle glaucoma [ see Drug Interactions (7.1) ]. Patients should avoid spraying ATROVENT HFA into their eyes. If a patient sprays ATROVENT HFA into their eyes, they may cause eye pain or discomfort, temporary blurring of vision, mydriasis, visual halos or colored images in association with red eyes from conjunctival and corneal congestion. Advise patients to consult their physician immediately if any of these symptoms develop while using ATROVENT HFA Inhalation Aerosol. 5.5 Urinary Retention ATROVENT HFA is an anticholinergic and may cause urinary retention. Therefore, caution is advised when administering ATROVENT HFA Inhalation Aerosol to patients with prostatic hyperplasia, or bladder-neck obstruction [ see Drug Interactions (7.1) ].

CONTRAINDICATIONS ATROVENT HFA is contraindicated in the following conditions [ see Warnings and Precautions (5.2) ]. Hypersensitivity to ipratropium bromide or other ATROVENT HFA components Hypersensitivity to atropine or any of its derivatives Hypersensitivity to ipratropium bromide or other ATROVENT HFA components ( 4 ) Hypersensitivity to atropine or any of its derivatives ( 4 )

DRUG INTERACTIONS ATROVENT HFA has been used concomitantly with other drugs, including sympathomimetic bronchodilators, methylxanthines, oral and inhaled steroids commonly used in the treatment of COPD. With the exception of albuterol, there are no formal studies fully evaluating the interaction effects of ATROVENT HFA and these drugs with respect to safety and effectiveness. Anticholinergics: May interact additively with concomitantly used anticholinergic medications. Avoid administration of ATROVENT HFA with other anticholinergic-containing drugs ( 7.1 ) 7.1 Anticholinergic Agents There is potential for an additive interaction with concomitantly used anticholinergic medications. Therefore, avoid coadministration of ATROVENT HFA with other anticholinergic-containing drugs as this may lead to an increase in anticholinergic adverse effects [ see Warnings and Precautions (5.4 , 5.5) ].

ADVERSE REACTIONS Adverse reaction information on Ipratropium Bromide Nasal Solution 0.03% in patients with perennial rhinitis was derived from four multicenter, vehicle-controlled clinical trials involving 703 patients (356 patients on Ipratropium Bromide Nasal Solution 0.03% and 347 patients on vehicle), and a one-year, open-label, follow-up trial. In three of the trials, patients received Ipratropium Bromide Nasal Solution 0.03% three times daily, for eight weeks. In the other trial, Ipratropium Bromide Nasal Solution 0.03% was given to patients two times daily for four weeks. Of the 285 patients who entered the open-label, follow-up trial, 232 were treated for 3 months, 200 for 6 months, and 159 up to one year. The majority (>86%) of patients treated for one year were maintained on 42 mcg per nostril, two or three times daily, of Ipratropium Bromide Nasal Solution 0.03%. Table 1 shows adverse events, and the frequency that these adverse events led to the discontinuation of treatment, reported for patients who received Ipratropium Bromide Nasal Solution 0.03% at the recommended dose of 42 mcg per nostril, or vehicle two or three times daily for four or eight weeks. Only adverse events reported with an incidence of at least 2.0% in the Ipratropium Bromide Nasal Solution 0.03% group and higher in the Ipratropium Bromide Nasal Solution 0.03% group than in the vehicle group are shown. Table 1 % of Patients Reporting Events + Ipratropium Bromide Nasal Solution 0.03% (n=356) Vehicle Control (n=347) Incidence % Discontinued % Incidence % Discontinued % Headache 9.8 0.6 9.2 0.0 Upper respiratory tract infection 9.8 1.4 7.2 1.4 Epistaxis 1 9.0 0.3 4.6 0.3 Rhinitis* Nasal dryness 5.1 0.0 0.9 0.3 Nasal irritation 2 2.0 0.0 1.7 0.6 Other nasal symptoms 3 3.1 1.1 1.7 0.3 Pharyngitis 8.1 0.3 4.6 0.0 Nausea 2.2 0.3 0.9 0.0 + This table includes adverse events which occurred at an incidence rate of at least 2.0% in the Ipratropium Bromide Nasal Solution 0.03%group and more frequently in the Ipratropium Bromide Nasal Solution 0.03%group than in the vehicle group. 1 Epistaxis reported by 7.0% of Ipratropium Bromide Nasal Solution 0.03%patients and 2.3% of vehicle patients, blood-tinged mucus by 2.0% of Ipratropium Bromide Nasal Solution 0.03%patients and 2.3% of vehicle patients. 2 Nasal irritation includes reports of nasal itching, nasal burning, nasal irritation, and ulcerative rhinitis. 3 Other nasal symptoms include reports of nasal congestion, increased rhinorrhea, increased rhinitis, posterior nasal drip, sneezing, nasal polyps, and nasal edema. * All events are listed by their WHO term; rhinitis has been presented by descriptive terms for clarification. Ipratropium Bromide Nasal Solution 0.03% was well tolerated by most patients. The most frequently reported nasal adverse events were transient episodes of nasal dryness or epistaxis. These adverse events were mild or moderate in nature, none was considered serious, none resulted in hospitalization and most resolved spontaneously or following a dose reduction. Treatment for nasal dryness and epistaxis was required infrequently (2% or less) and consisted of local application of pressure or a moisturizing agent (e.g., petroleum jelly or saline nasal spray). Patient discontinuation for epistaxis or nasal dryness was infrequent in both the controlled (0.3% or less) and one-year, open-label (2% or less) trials. There was no evidence of nasal rebound (i.e., a clinically significant increase in rhinorrhea, posterior nasal drip, sneezing or nasal congestion severity compared to baseline) upon discontinuation of double-blind therapy in these trials. Adverse events reported by less than 2% of the patients receiving Ipratropium Bromide Nasal Solution 0.03% during the controlled clinical trials or during the open-label follow-up trial, which are potentially related to Ipratropium Bromide Nasal Solution 0.03% local effects or systemic anticholinergic effects include: dry mouth/throat, dizziness, ocular irritation, blurred vision, conjunctivitis, hoarseness, cough, and taste perversion. There were infrequent reports of skin rash in both the controlled and uncontrolled clinical studies. Post-Marketing Experience Allergic-type reactions such as skin rash, angioedema, including that of the throat, tongue, lips and face, generalized urticaria (including giant urticaria), laryngospasm, and anaphylactic reactions have been reported with Ipratropium Bromide Nasal Solution 0.03% and for other ipratropium bromide-containing products, with positive rechallenge in some cases. Additional side effects identified from the published literature and/or post-marketing surveillance on the use of ipratropium bromide-containing products (singly or in combination with albuterol), include: urinary retention, prostatic disorders, mydriasis, cases of precipitation or worsening of narrow-angle glaucoma, acute eye pain, wheezing, dryness of the oropharynx, sinusitis, tachycardia, palpitations, pain, edema, gastrointestinal distress (diarrhea, nausea, vomiting), bowel obstruction, constipation, nasal discomfort, throat irritation, hypersensitivity, accommodation disorder, intraocular pressure increased, glaucoma, halo vision, conjunctival hyperaemia, corneal edema, heart rate increased, bronchospasm, pharyngeal edema, gastrointestinal motility disorder, mouth edema, stomatitis, and pruritus. After oral inhalation of ipratropium bromide in patients suffering from COPD/Asthma supraventricular tachycardia and atrial fibrillation have been reported. To report SUSPECTED ADVERSE REACTIONS, contact Amneal Pharmaceuticals at 1-877-835-5472 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

CLINICAL PHARMACOLOGY Mechanism of Action Ipratropium bromide is an anticholinergic (parasympatholytic) agent which, based on animal studies, appears to inhibit vagally-mediated reflexes by antagonizing the action of acetylcholine, the transmitter agent released at the neuromuscular junctions in the lung. In humans, ipratropium bromide has anti-secretory properties and, when applied locally, inhibits secretions from the serous and seromucous glands lining the nasal mucosa. Ipratropium bromide is a quaternary amine that minimally crosses the nasal and gastrointestinal membranes and the blood-brain barrier, resulting in a reduction of the systemic anticholinergic effects (e.g., neurologic, ophthalmic, cardiovascular, and gastrointestinal effects) that are seen with tertiary anticholinergic amines. Pharmacokinetics Absorption: Ipratropium bromide is poorly absorbed into the systemic circulation following oral administration (2% to 3%). Less than 20% of an 84 mcg per nostril dose was absorbed from the nasal mucosa of normal volunteers, induced-cold adult volunteers, naturally acquired common cold pediatric patients, or perennial rhinitis adult patients. Distribution: Ipratropium bromide is minimally bound (0% to 9% in vitro ) to plasma albumin and α 1 -acid glycoprotein. Its blood/plasma concentration ratio was estimated to be about 0.89. Studies in rats have shown that ipratropium bromide does not penetrate the blood-brain barrier. Metabolism: Ipratropium bromide is partially metabolized to ester hydrolysis products, tropic acid, and tropane. These metabolites appear to be inactive based on in vitro receptor affinity studies using rat brain tissue homogenates. Elimination: After intravenous administration of 2 mg ipratropium bromide to 10 healthy volunteers, the terminal half-life of ipratropium bromide was approximately 1.6 hours. The total body clearance and renal clearance were estimated to be 2,505 and 1,019 mL/min, respectively. The amount of the total dose excreted unchanged in the urine (Ae) within 24 hours was approximately one-half of the administered dose. Pediatrics: Following administration of 84 mcg of ipratropium bromide per nostril three times a day in patients 5 to 18 years old (n=42) with a naturally acquired common cold, the mean amount of the total dose excreted unchanged in the urine of 7.8% was comparable to 84 mcg per nostril four times a day in an adult induced common cold population (n=22) of 7.3% to 8.1%. Plasma ipratropium concentrations were relatively low (ranging from undetectable up to 0.62 ng/mL). No correlation of the amount of the total dose excreted unchanged in the urine (Ae) with age or gender was observed in the pediatric population. Special Populations: Gender does not appear to influence the absorption or excretion of nasally administered ipratropium bromide. The pharmacokinetics of ipratropium bromide have not been studied in patients with hepatic or renal insufficiency or in the elderly. Drug-Drug Interactions: No specific pharmacokinetic studies were conducted to evaluate potential drug-drug interactions. Pharmacodynamics In two single dose trials (n=17), doses up to 336 mcg of ipratropium bromide did not significantly affect pupillary diameter, heart rate, or systolic/diastolic blood pressure. Similarly, Ipratropium Bromide Nasal Solution 0.06% in adult patients (n=22) with induced-colds (84 mcg/nostril four times a day) and in pediatric patients (n=45) with naturally acquired common cold (84 mcg/nostril three times a day) had no significant effects on pupillary diameter, heart rate, or systolic/diastolic blood pressure. Controlled clinical trials demonstrated that intranasal fluorocarbon-propelled ipratropium bromide does not alter physiologic nasal functions (e.g., sense of smell, ciliary beat frequency, mucociliary clearance, or the air conditioning capacity of the nose). Clinical Trials Clinical trials for Ipratropium Bromide Nasal Solution 0.06% were conducted in patients with rhinorrhea associated with naturally occurring common colds. In two controlled four day comparisons of Ipratropium Bromide Nasal Solution 0.06% (84 mcg per nostril, administered three or four times daily; n=352) with its vehicle (n=351), there was a statistically significant reduction of rhinorrhea, as measured by both nasal discharge weight and the patients’ subjective assessment of severity of rhinorrhea using a visual analog scale. These significant differences were evident within one hour following dosing. There was no effect of Ipratropium Bromide Nasal Solution 0.06% on degree of nasal congestion or sneezing. The response to Ipratropium Bromide Nasal Solution 0.06% did not appear to be affected by age or gender. No controlled clinical trials directly compared the efficacy of three times daily versus four times daily treatment. One clinical trial was conducted with Ipratropium Bromide Nasal Solution 0.06%, administered four times daily for three weeks, in 218 patients with rhinorrhea associated with Seasonal Allergic Rhinitis (SAR), compared to its vehicle in 211 patients. Patients in this trial were adults and adolescents 12 years of age and above. Ipratropium Bromide Nasal Solution0.06% was significantly more effective in reducing the severity and duration of rhinorrhea over the three weeks of the study, as measured by daily patient symptom scores. There was no difference between treatment groups in the effect on nasal congestion, sneezing or itching eyes.