ATROVENT HFA

The active ingredient in ATROVENT HFA is ipratropium bromide (monohydrate). It is an anticholinergic bronchodilator chemically described as 8-azoniabicyclo[3.2.1]octane, 3-(3-hydroxy-1-oxo-2-phenylpropoxy)-8-methyl-8-(1-methylethyl)-,bromide monohydrate, (3-endo, 8-syn)-: a synthetic quaternary ammonium compound, chemically related to atropine. The structural formula for ipratropium bromide is: C 20 H 30 BrNO 3 ∙H 2 O ipratropium bromide Mol. Wt. 430.4 Ipratropium bromide is a white to off-white crystalline substance, freely soluble in water and methanol, sparingly soluble in ethanol, and insoluble in lipophilic solvents such as ether, chloroform, and fluorocarbons. ATROVENT HFA is a pressurized metered-dose aerosol unit for oral inhalation that contains a solution of ipratropium bromide. The 200 inhalation unit has a net weight of 12.9 grams. After priming, each actuation of the inhaler delivers 21 mcg of ipratropium bromide (monohydrate) from the valve in 56 mg of solution and delivers 17 mcg of ipratropium bromide (monohydrate) from the mouthpiece. The actual amount of drug delivered to the lung may depend on patient factors, such as the coordination between the actuation of the device and inspiration through the delivery system. The excipients are anhydrous citric acid, dehydrated alcohol, HFA-134a (1,1,1,2-tetrafluoroethane) as propellant, and sterile water for irrigation. This product does not contain chlorofluorocarbons (CFCs) as propellants. ATROVENT HFA should be primed before using for the first time by releasing 2 test sprays into the air away from the face. In cases where the inhaler has not been used for more than 3 days, prime the inhaler again by releasing 2 test sprays into the air away from the face. Chemical Structure

ATROVENT HFA Inhalation Aerosol is indicated as a bronchodilator for maintenance treatment of bronchospasm associated with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema. ATROVENT HFA is an anticholinergic indicated for the maintenance treatment of bronchospasm associated with chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema ( 1 )

The usual starting dosage of ATROVENT HFA is two inhalations four times a day. Patients may take additional inhalations as required; however, the total number of inhalations should not exceed 12 in 24 hours. ATROVENT HFA is a solution aerosol that does not require shaking. However, as with any other metered-dose inhaler, some coordination is required between actuating the canister and inhaling the medication. Patients should "prime" or actuate ATROVENT HFA before using for the first time by releasing 2 test sprays into the air away from the face. In cases where the inhaler has not been used for more than 3 days, prime the inhaler again by releasing 2 test sprays into the air away from the face. Patients should avoid spraying ATROVENT HFA into their eyes. Each inhaler provides sufficient medication for 200 actuations. The inhaler should be discarded after the labeled number of actuations has been used. The amount of medication in each actuation cannot be assured after this point, even though the canister is not completely empty. Patients should be instructed on the proper use of their inhaler [ see Patient Counseling Information (17) ]. For oral inhalation only Two inhalations four times a day, not to exceed 12 inhalations in 24 hours ( 2 )

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 )

The following adverse reactions are described, or described in greater detail, in other sections: Hypersensitivity Reactions, Including Anaphylaxis [ see Contraindications (4) and Warnings and Precautions (5.2) ] Paradoxical Bronchospasm [ see Warnings and Precautions (5.3) ] Ocular Effects [ see Warnings and Precautions (5.4) ] Urinary Retention [ see Warnings and Precautions (5.5) ] 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 patients. Most common adverse reactions (>5% incidence in the 12-week placebo-controlled trials) were bronchitis, COPD exacerbation, dyspnea, and headache ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Boehringer Ingelheim Pharmaceuticals, Inc. at 1-800-542-6257 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience The adverse reaction information concerning ATROVENT HFA is derived from two 12-week, double-blind, parallel-group studies and one 1-year open-label, parallel group study. These studies compared ATROVENT HFA Inhalation Aerosol, ATROVENT CFC Inhalation Aerosol, and placebo (in one study only) in 1,010 COPD patients. The following table lists the incidence of adverse reactions that occurred at a rate of greater than or equal to 3% in any ipratropium bromide group and greater than placebo in the 12-week study. The frequency of corresponding reactions in the 1-year open label study is included for comparison. TABLE 1 Adverse Reactions (% Patients) in ATROVENT HFA Clinical Trials Placebo-controlled 12-week Study 244.1405 and Active-controlled 12-week Study 244.1408 Active-controlled 1-year Study 244.2453 ATROVENT HFA (N=243) % ATROVENT CFC (N=183) % Placebo (N=128) % ATROVENT HFA (N=305) % ATROVENT CFC (N=151) % BODY AS A WHOLE - GENERAL DISORDERS Back pain 2 3 2 7 3 Headache 6 9 8 7 5 Influenza-like symptoms 4 2 2 8 5 CENTRAL & PERIPHERAL NERVOUS SYSTEM DISORDERS Dizziness 3 3 2 3 1 GASTROINTESTINAL SYSTEM DISORDERS Dyspepsia 1 3 1 5 3 Mouth dry 4 2 2 2 3 Nausea 4 1 2 4 4 RESPIRATORY SYSTEM DISORDERS Bronchitis 10 11 6 23 19 COPD exacerbation 8 14 13 23 23 Dyspnea 8 8 4 7 4 Sinusitis 1 4 3 11 14 URINARY SYSTEM DISORDERS Urinary tract infection 2 3 1 10 8 Cough, rhinitis, and upper respiratory infection occurred in greater than or equal to 3% of patients in either ipratropium treatment group but not greater than placebo in the 12-week study. In the one open-label controlled study in 456 COPD patients, the overall incidence of adverse events was also similar between ATROVENT HFA and ATROVENT CFC formulations. Overall, in the above mentioned studies, 9.3% of the patients taking 42 mcg ATROVENT HFA and 8.7% of the patients taking 42 mcg ATROVENT CFC reported at least one adverse event that was considered by the investigator to be related to the study drug. The most common drug-related adverse events were dry mouth (1.6% of ATROVENT HFA and 0.9% of ATROVENT CFC patients), and taste perversion (bitter taste) (0.9% of ATROVENT HFA and 0.3% of ATROVENT CFC patients). As an anticholinergic drug, cases of precipitation or worsening of narrow-angle glaucoma, glaucoma, halo vision, conjunctival hyperemia, corneal edema, mydriasis, acute eye pain, dry throat, hypotension, palpitations, urinary retention, tachycardia, constipation, bronchospasm, including paradoxical bronchospasm have been reported with the use of ATROVENT. Additional adverse reactions identified for ATROVENT seen in clinical trials include throat irritation, stomatitis, mouth edema, and vision blurred. Allergic-type reactions such as skin rash, pruritus, angioedema including that of tongue, lips and face, urticaria (including giant urticaria), laryngospasm and anaphylactic reactions have been reported [ see Warnings and Precautions (5.2) ]. 6.2 Postmarketing Experience In a 5-year, placebo-controlled trial, hospitalizations for supraventricular tachycardia and/or atrial fibrillation occurred with an incidence rate of 0.5% in COPD patients receiving ATROVENT CFC. In addition to the adverse reactions reported in the controlled clinical trials, adverse reactions have been identified during post-approval use of ATROVENT. 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. Allergic-type reactions such as skin rash, angioedema including that of tongue, lips and face, urticaria (including giant urticaria), laryngospasm, and anaphylactic reactions have been reported, with positive rechallenge in some cases. Additionally, urinary retention, mydriasis, gastrointestinal distress (diarrhea, nausea, vomiting), cough and bronchospasm, including paradoxical bronchospasm, hypersensitivity reactions, intraocular pressure increased, accommodation disorder, heart rate increased, pharyngeal edema, and gastrointestinal motility disorders have been reported during the postmarketing period with use of ATROVENT.

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) ].

Storage Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature]. For optimal results, the canister should be at room temperature before use. Contents Under Pressure: Do not puncture. Do not use or store near heat or open flame. Exposure to temperatures above 120°F may cause bursting. Never throw the inhaler into a fire or incinerator. Keep out of reach of children. Avoid spraying in eyes .