COCAINE HYDROCHLORIDE NASAL

Cocaine Hydrochloride nasal solution is a clear, blue-green, aqueous solution, available in 4% strength. Each 1 mL contains cocaine hydrochloride 40 mg, equivalent to 35.7 mg of cocaine free base; 4% as 160 mg/4 mL or 400 mg/10 mL. Cocaine, (1R,2R,3S,5S) methyl 3-(benzoyloxy)-8-methyl-8-azabicyclo[3.2.1]octane-2-carboxylate hydrochloride, is a synthetic tropane alkaloid ester, local anesthetic, which occurs as colorless to white crystals or white crystalline powder. The structural formula for cocaine hydrochloride is as follows: Formula C 17 H 21 NO 4 HCl Molecular weight 339.81 Cocaine hydrochloride also contains the following inactive ingredients: purified water, citric acid (anhydrous), sodium benzoate, D&C Yellow No. 10, and FD&C Green No. 3. Structural Formula

Cocaine Hydrochloride nasal solution is indicated for the induction of local anesthesia of the mucous membranes when performing diagnostic procedures and surgeries on or through the nasal cavities in adults. Cocaine hydrochloride nasal solution is an ester local anesthetic indicated for the induction of local anesthesia of the mucous membranes when performing diagnostic procedures and surgeries on or through the nasal cavities in adults. ( 1 )

For intranasal use only. ( 2.1 ) Do not apply to damaged nasal mucosa. ( 2.1 ) Cocaine hydrochloride should not be substituted for other nasal cocaine products unless determined by FDA to be substitutable. ( 2.1 ) The recommended dose of cocaine hydrochloride ranges from 40 mg to 160 mg, depending on the nasal surface area to be anesthetized and the procedure to be performed. ( 2.2 ) Cocaine hydrochloride should be administered by means of cotton or rayon applicator pledgets applied to the nasal mucosa. ( 2 ) One pledget will absorb one mL of cocaine hydrochloride nasal solution. ( 2.2 ) Preparation and Application: Draw up 4 mL cocaine hydrochloride 4% nasal solution into a syringe calibrated in mL. Apply 2 mL cocaine hydrochloride nasal solution to the top of four stacked pledgets. Turn the stacked pledgets over and apply 2 mL cocaine hydrochloride nasal solution to the other side. ( 2.3 ) Cocaine hydrochloride nasal solution should be evenly distributed on all pledgets. ( 2.3 ) Following soaking, place a maximum of two pledgets in each nasal cavity. ( 2.3 ) Leave pledgets in place for up to 20 minutes. ( 2.3 ) Pledgets should be removed immediately upon any sign or symptom of an adverse event. ( 2.2 ) 2.1 Important Dosage and Administration Instructions Cocaine hydrochloride is for intranasal use only. Do not apply cocaine hydrochloride to damaged nasal mucosa. Unless the FDA has determined that these products can be substituted, do not substitute cocaine hydrochloride for other intranasal cocaine products because this may result in different local and/or systemic exposures. 2.2 Dosing Recommendations The recommended dose of cocaine hydrochloride ranges from 40 mg to 160 mg, depending on the nasal mucosal area to be anesthetized and the procedure to be performed. Each pledget absorbs one mL of cocaine hydrochloride nasal solution. A maximum of two soaked cotton or rayon pledgets may be placed in each nasal cavity, for a total dose of 160 mg for cocaine hydrochloride nasal solution 4%. The total dose for any one procedure or surgery should not exceed 3 mg/kg cocaine hydrochloride. The recommended size of the cotton or rayon pledgets for use with cocaine hydrochloride measure ½ inch x 3 inch (sold separately). 2.3 Preparation and Administration of Cocaine Hydrochloride via Pledgets Draw up 4 mL cocaine hydrochloride into a syringe calibrated in mL. Stack four pledgets and apply 2 mL of solution to the top of the stacked pledgets. Turn the stacked pledgets over and apply 2 mL of solution to the other side. Cocaine hydrochloride should be evenly distributed on all pledgets. Following cocaine hydrochloride application to pledgets, place One (1) or two (2) pledgets in each nasal cavity, for a maximum of 2 pledgets used per nostril. Leave pledgets in place for up to 20 minutes. Remove pledgets and continue with the procedure. Discard pledgets, and dispose of any unused pledgets and remaining solution in accordance with institutional procedures for CII products. Pledgets should be removed immediately upon any sign or symptom of an adverse event.

Cocaine hydrochloride is contraindicated in: patients with a known history of hypersensitivity to cocaine hydrochloride, other ester-based local anesthetics, or any other component of the nasal solution [see Warnings and Precautions ( 5.5 )] . Hypersensitivity to cocaine, or any component of cocaine hydrochloride. ( 4 )

The following treatment-emergent adverse events are discussed in more detailed in other sections of the labeling: Increases in Blood Pressure and Heart Rate [see Warnings and Precautions ( 5.3 )] The most common adverse reactions (> 1%) occurring in patients treated with cocaine hydrochloride were hypertension, tachycardia, and sinus tachycardia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Omnivium Pharmaceuticals LLC at 1-888-807-1048 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial 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. Cocaine hydrochloride nasal solution has been evaluated in one Phase 1 study, one QT study and two Phase 3 studies, which included 702 adult subjects who received a single application of cocaine hydrochloride nasal solution 4%, cocaine hydrochloride nasal solution 10%, or placebo. The randomized, double-blind, placebo controlled Phase 3 studies were conducted in adult patients undergoing diagnostic procedures and surgeries on or through the mucous membranes of the nasal cavities, of which 316 received cocaine hydrochloride nasal solution 4%, 318 received cocaine hydrochloride nasal solution 10%, and 168 received placebo. Safety was evaluated for up to 7 days after dosing. In a Phase 3 study, patients received a mean dose of 126 mg (80 to 160 mg, N=259) of cocaine hydrochloride using cocaine hydrochloride nasal solution 4% and a mean dose of 319 mg (200 to 400 mg, N=259) of cocaine hydrochloride using cocaine hydrochloride nasal solution 10% as a single application. The most common adverse reactions reported with cocaine hydrochloride 4% are included in Table 1 (preexisting nasal conditions are not included). There were two patients treated with cocaine hydrochloride nasal solution 4% who withdrew due to an adverse reaction. One patient developed anxiety and systolic hypertension and one patient developed intermittent paroxysmal tachycardia. Both patients developed symptoms within 10 minutes of nasal pledget application. Three patients treated with cocaine hydrochloride nasal solution 10% required premature removal of pledgets due to nausea and diastolic hypertension; mild intermittent paroxysmal hypertension and paroxysmal tachycardia; and vasovagal syncope with bradycardia. Table 1. Common Adverse Reactions with Cocaine Hydrochloride in > 1% of Treated Patients MedDRA System Organ Class and Preferred Term Cocaine Hydrochloride, 4% (N=259) n, % Cocaine Hydrochloride, 10% (N=259) n, % Placebo (N=128) n, % Vascular Disorders 203 (78) 224 (87) 86 (67) Hypertension 201 (78) 220 (85) 85 (66) Cardiac Disorders 31 (12) 47 (18) 10 (8) Tachycardia 12 (5) 28 (11) 1 (1) Bradycardia 8 (3) 1 (0.4) 5 (4) Sinus tachycardia 6 (2) 9 (4) 0 Investigations 13 (5) 30 (12) 8 (6) QRS prolonged 4 (2) 8 (3) 3 (2) QT interval prolonged 7 (3) 10 (4) 3 (2) 6.2 Postmarketing Experience The following adverse reactions have been identified during use of Cocaine Hydrochloride Nasal Solution. 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. Nervous system disorders: Headache, Seizure Cardiac disorders: Hypertension, tachycardia, atrial and ventricular arrhythmias, myocardial ischemia and infarction Psychiatric disorders: Anxiety

Epinephrine, Phenylephrine: There have been reports of myocardial ischemia, myocardial infarction, and ventricular arrhythmias with concomitant use during nasal surgery. Avoid use of additional vasoconstrictor agents with cocaine hydrochloride. If concomitant use is unavoidable, prolonged vital sign and ECG monitoring may be required. ( 5.3 , 7.2 ) Disulfiram: Disulfiram treatment increases plasma cocaine exposure. Avoid using cocaine hydrochloride in patients taking disulfiram. ( 7.3 ) CNS stimulants: Concomitant administration may result in nervousness, irritability, or possibly convulsions. ( 7.1 ) Cholinesterase inhibitors: Concomitant administration may increase the risk of cocaine toxicity. ( 7.4 ) Sympathomimetics, postganglionic blocking agents, and tricyclic antidepressants: Concomitant administration may increase the risk of cardiovascular adverse reactions. ( 7.5 , 7.6 ) Monoamine-oxidase inhibitors: Concomitant administration may potentiate the effects and toxicity of monoamine-oxidase inhibitors. ( 7.7 ) 7.1 Central Nervous System Stimulants Concurrent use of other central nervous system stimulants with cocaine may result in excessive stimulation, leading to nervousness, irritability, or possibly convulsions, or cardiac arrhythmias. 7.2 Epinephrine, Phenylephrine There are reports in the published literature of myocardial ischemia, myocardial infarction, and ventricular arrhythmias after concomitant administration of topical intranasal cocaine with epinephrine and phenylephrine during nasal and sinus surgery. Avoid use of additional vasoconstrictor agents such as epinephrine and phenylephrine with cocaine hydrochloride during nasal and sinus surgery. If concomitant use is unavoidable, prolonged vital sign and ECG monitoring may be required. 7.3 Disulfiram Published literature reported that disulfiram treatment increased plasma cocaine exposure (AUC and C max ), by several folds after acute intranasal cocaine administration. Another literature reported that co-administration of disulfiram increased AUC of plasma cocaine by several folds after intravenous cocaine administration [see Clinical Pharmacology ( 12.3 )] . Avoid using cocaine hydrochloride in patients taking disulfiram. Consider using other local anesthesia. 7.4 Cholinesterase Inhibitors Cocaine has been described in literature to be primarily metabolized and inactivated by non-enzymatic ester hydrolysis and hepatic carboxylesterase, and also by plasma cholinesterase, hepatic carboxylesterase, and CYP3A4. The pharmacokinetics of cocaine hydrochloride in patients with reduced plasma cholinesterase activity has not been studied. Plasma cholinesterase activity may be decreased by chronic administration of certain monoamine oxidase inhibitors, oral contraceptives, glucocorticoids, antimyasthenics (neostigmine), cyclophosphamide, and possibly thiotepa. It may also be diminished by administration of irreversible plasma cholinesterase inhibitors such as echothiophate, organophosphate insecticides, and certain antineoplastic agents. Patients with reduced plasma cholinesterase (pseudocholinesterase) activity may have reduced clearance and increased exposure of plasma cocaine after administration of cocaine hydrochloride. Because cocaine is metabolized by multiple enzymes, the effect of reduced plasma cholinesterase activity on cocaine exposure may be limited. No dosage adjustment of cocaine hydrochloride is needed in patients with reduced plasma cholinesterase. Monitor patients with reduced plasma cholinesterase activity for adverse reactions such as clinically-relevant increases in heart rate or blood pressure. 7.5 Postganglionic Blocking Agents Agents such as reserpine potentiate cocaine-induced sympathetic stimulation; concurrent use may increase the risk of hypertension and cardiac arrhythmias that may be life-threatening. 7.6 Tricyclic Antidepressants Tricyclic antidepressants may increase the activity of the sympathetic nervous system, which may also be increased by administration of cocaine hydrochloride. 7.7 Monoamine-Oxidase Inhibitors Cocaine hydrochloride may potentiate the effects and toxicity of MAO inhibitors.