Scopolamine

RECENT MAJOR CHANGES Warnings and Precautions, Hyperthermia ( 5.5 ) 4/2025

1 INDICATIONS AND USAGE Scopolamine Transdermal System is indicated in adults for the prevention of: nausea and vomiting associated with motion sickness. post-operative nausea and vomiting (PONV) associated with recovery from anesthesia and/or opiate analgesia and surgery. Scopolamine transdermal system is an anticholinergic indicated in adults for the prevention of: nausea and vomiting associated with motion sickness. ( 1 ) post-operative nausea and vomiting (PONV) associated with recovery from anesthesia and/or opiate analgesia and surgery. ( 1 )

2 DOSAGE AND ADMINISTRATION Application and Removal ( 2.1 ): Each scopolamine transdermal system delivers 1 mg of scopolamine over 3 days. Only wear one transdermal system at a time. Do not cut the transdermal system. Wash hands thoroughly with soap and water after application. Avoid touching or applying pressure to the transdermal system once applied. Upon removal, fold used transdermal system in half with sticky side together, discard to prevent accidental contact or ingestion, and wash the hands and application site with soap and water. Recommended Dosage: Motion Sickness : Apply one transdermal system to the hairless area behind one ear at least 4 hours before antiemetic effect is required for use up to 3 days. If therapy for more than 3 days is required, remove the first transdermal system and apply a new transdermal system behind the other ear. ( 2.2 ) PONV : For surgeries other than cesarean section, apply one transdermal system behind the ear the evening before surgery and remove 24 hours following surgery. ( 2.2 ) 2.1 Important Application and Removal Instructions Each scopolamine transdermal system is formulated to deliver in vivo approximately 1 mg of scopolamine over 3 days. Only wear one transdermal system at any time. Do not cut the transdermal system. Apply the transdermal system to the skin in the postauricular area (hairless area behind one ear). After the transdermal system is applied on the dry skin behind the ear, wash hands thoroughly with soap and water and dry hands [see Warnings and Precautions (5.7) ] . If the transdermal system becomes displaced, discard the transdermal system, and apply a new transdermal system on the hairless area behind the other ear. Once the transdermal system has been affixed, avoid touching or applying pressure to the transdermal system while it is being worn, since pressure exerted on it may cause scopolamine to ooze out at the edge. Upon removal, fold the used transdermal system in half with the sticky side together, and discard in household trash in a manner that prevents accidental contact or ingestion by children, pets, or others. Wash the hands and application site with soap and water after transdermal system removal [see Warnings and Precautions (5.7) ]. 2.2 Recommended Adult Dosage Motion Sickness Apply one scopolamine transdermal system to the hairless area behind one ear at least 4 hours before the antiemetic effect is required – for use up to 3 days. If therapy is required for longer than 3 days, remove the first transdermal system and apply a new scopolamine transdermal system behind the other ear. PONV For surgeries other than cesarean section : Apply one scopolamine transdermal system the evening before scheduled surgery. Remove the transdermal system 24 hours following surgery.

3 DOSAGE FORMS AND STRENGTHS Transdermal system: 1 mg/3 days ( 3 ) Transdermal system: round patch with a tan coloured backing layer placed on a squarish release liner. The release liner is dimpled. The backing has an imprint of "Scopolamine 1 mg/3 days". The matrix is dispersed white and may contain light spots and is free of visible crystals.

4 CONTRAINDICATIONS Scopolamine transdermal system is contraindicated in patients with: angle closure glaucoma [see Warnings and Precautions ( 5.1 )] . hypersensitivity to scopolamine or other belladonna alkaloids or to any ingredient or component in the formulation or delivery system. Reactions have included rash generalized and erythema [see Adverse Reactions ( 6.2 ), Description ( 11 )] . Angle closure glaucoma. ( 4 , 6.2 ) Hypersensitivity to scopolamine or other belladonna alkaloids or to any ingredient or component of the formulation or delivery system. ( 4 , 7 )

6 ADVERSE REACTIONS Most common adverse reactions are: Motion Sickness (>15%): dry mouth, drowsiness, blurred vision and dilation of the pupils. ( 6.1 ) PONV (≥ 3%): dry mouth, dizziness, somnolence, agitation, visual impairment, confusion, mydriasis and pharyngitis. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Ingenus Pharmaceuticals, LLC at 1-877-748-1970 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . The following serious adverse reactions are described elsewhere in labeling: Acute Angle Closure Glaucoma [see Warnings and Precautions ( 5.1 )] Neuropsychiatric Adverse Reactions [see Warnings and Precautions ( 5.2 )] Eclamptic Seizures in Pregnant Women [see Warnings and Precautions ( 5.3 )] Gastrointestinal and Urinary Disorders [see Warnings and Precautions ( 5.4 )] Hyperthermia [see Warnings and Precautions ( 5.5 )] Drug Withdrawal/Post-Removal Symptoms [see Warnings and Precautions ( 5.6 )] Blurred Vision [see Warnings and Precautions ( 5.7 )] MRI Skin Burns [see Warnings and Precautions ( 5.8 )] 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. Motion Sickness The most common adverse reaction (approximately two thirds) was dry mouth. Less common adverse reactions, included drowsiness (less than one sixth), blurred vision and dilation of the pupils. PONV Common adverse reactions, occurring in at least 3% of patients in PONV clinical trials are shown in Table 1. Table 1 Common Adverse Reactions occurring in at least 3% of patients and at a rate higher than placebo in Surgical Patients for the Prevention of PONV Scopolamine Transdermal System % (N=461) Placebo % (N=457) Dry mouth 29 16 Dizziness 12 7 Somnolence 8 4 Agitation 6 4 Visual Impairment 5 3 Confusion 4 3 Mydriasis 4 0 Pharyngitis 3 2 6.2 Postmarketing Experience The following adverse reactions have been identified during post-approval use of scopolamine transdermal system. 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. Psychiatric disorders: acute psychosis including: disorientation, hallucinations, and paranoia Nervous system disorders: amnesia, coordination abnormalities, disturbance in attention, headache, restlessness, speech disorder General disorders and administration site conditions: application site reactions (including blistering, burning, pruritus, and rash) and hyperthermia Eye disorders: amblyopia, angle closure glaucoma, dry eyes, eyelid irritation, eye pruritus Skin and subcutaneous tissue disorders: erythema, rash generalized, skin irritation Renal and urinary disorders: dysuria Ear and labyrinth disorders: vertigo

7 DRUG INTERACTIONS Drugs Causing Central Nervous System (CNS) Adverse Reactions : Monitor patients for CNS adverse reactions (drowsiness, dizziness, or disorientations). ( 7.1 ) Anticholinergic Drugs: Consider more frequent monitoring during treatment in patients receiving other anticholinergic drugs. ( 7.2 ) Oral Drugs Absorbed in the Stomach : Monitor for increased or decreased therapeutic effect of the oral drug. ( 7.3) Interaction with Gastric Secretion Test: Discontinue use of scopolamine transdermal system 10 days prior to testing. ( 7.4 ) 7.1 Drugs Causing Central Nervous System (CNS) Adverse Reactions The concurrent use of scopolamine transdermal system with other drugs that cause CNS adverse reactions of drowsiness, dizziness or disorientation (e.g., sedatives, hypnotics, opiates, anxiolytics, and alcohol) or have anticholinergic properties (e.g., other belladonna alkaloids, sedating antihistamines, meclizine, tricyclic antidepressants, and muscle relaxants) may potentiate the effects of scopolamine transdermal system [see Warnings and Precautions (5.2) ] . Either scopolamine transdermal system or the interacting drug should be chosen, depending on the importance of the drug to the patient. If the interacting drug cannot be avoided, monitor patients for CNS adverse reactions. 7.2 Anticholinergic Drugs Concomitant use of scopolamine with other drugs having anticholinergic properties may increase the risk of CNS adverse reactions [see Drug Interactions (7.1) ], intestinal obstruction and/or urinary retention. Consider more frequent monitoring during treatment with scopolamine transdermal system in patients receiving anticholinergic drugs [see Warnings and Precautions (5.2 , 5.4) ] . 7.3 Oral Drugs Absorbed in the Stomach Scopolamine transdermal system, as an anticholinergic, may delay gastric and upper gastrointestinal motility and, therefore, the rate of absorption of other orally administered drugs. Monitor patients for modified therapeutic effect of concomitant orally administered drugs with a narrow therapeutic index. 7.4 Interaction with Gastric Secretion Test Scopolamine will interfere with the gastric secretion test. Discontinue scopolamine transdermal system 10 days prior to testing.

8 USE IN SPECIFIC POPULATIONS Geriatric Patients: Consider more frequent monitoring during treatment due to increased risk of CNS adverse reactions. ( 5.2 , 8.5 ) Renal or Hepatic Impairment: Consider more frequent monitoring during treatment due to increased risk of CNS adverse reactions. ( 5.2 , 8.6 ) 8.1 Pregnancy Risk Summary Eclamptic seizures have been reported in pregnant women with severe preeclampsia soon after injection of intravenous or intramuscular scopolamine. Avoid use of scopolamine transdermal system in patients with severe preeclampsia [see Warnings and Precautions ( 5.3 ) and Data] . Available data from observational studies and postmarketing reports with scopolamine use in pregnant women have not identified a drug associated risk of major birth defects, miscarriage, or adverse fetal outcomes. In animal studies, there was no evidence of adverse developmental effects with intravenous administration of scopolamine hydrobromide revealed in rats. Embryotoxicity was observed in rabbits at intravenous doses producing plasma levels approximately 100 times the levels achieved in humans using a transdermal system. The background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Data Human Data In published case reports, two pregnant patients with severe preeclampsia were administered intravenous and intramuscular scopolamine, respectively, and developed eclamptic seizures soon after scopolamine administration [see Warnings and Precautions ( 5.3 )] . Animal Data In animal reproduction studies, when pregnant rats and rabbits received scopolamine hydrobromide by daily intravenous injection, no adverse effects were observed in rats. An embryotoxic effect was observed in rabbits at doses producing plasma levels approximately 100 times the levels achieved in humans using a transdermal system. Scopolamine administered parenterally to rats and rabbits at doses higher than the dose delivered by scopolamine transdermal system did not affect uterine contractions or increase the duration of labor. 8.2 Lactation Risk Summary Scopolamine is present in human milk. There are no available data on the effects of scopolamine on the breastfed infant or the effects on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for scopolamine transdermal system and any potential adverse effects on the breastfed child from scopolamine transdermal system or from the underlying maternal condition. 8.4 Pediatric Use The safety and effectiveness of scopolamine transdermal system have not been established in pediatric patients. Pediatric patients are particularly susceptible to the anticholinergic adverse reactions of scopolamine, including neurologic and psychiatric adverse reactions and drug withdrawal syndrome. Serious adverse reactions of acute psychosis (e.g., disorientation, hallucinations), amblyopia, hyperthermia (including a fatal case), and mydriasis have also been reported in pediatric patients [see Warnings and Precautions ( 5.2 , 5.5 )] . 8.5 Geriatric Use Clinical trials of scopolamine transdermal system did not include sufficient number of subjects aged 65 years and older to determine if they respond differently from younger subjects. In other clinical experience, elderly patients had an increased risk of neurologic and psychiatric adverse reactions, such as hallucinations, confusion, dizziness and drug withdrawal syndrome [see Warnings and Precautions ( 5.2 , 5.6 )] . Consider more frequent monitoring for CNS adverse reactions during treatment with scopolamine transdermal system in geriatric patients [see Warnings and Precautions ( 5.2 )] . Serious adverse reactions of …

12.1 Mechanism of Action Scopolamine, a belladonna alkaloid, is an anticholinergic. Scopolamine acts: i) as a competitive inhibitor at postganglionic muscarinic receptor sites of the parasympathetic nervous system, and ii) on smooth muscles that respond to acetylcholine but lack cholinergic innervation. It has been suggested that scopolamine acts in the central nervous system (CNS) by blocking cholinergic transmission from the vestibular nuclei to higher centers in the CNS and from the reticular formation to the vomiting center. Scopolamine can inhibit the secretion of saliva and sweat, decrease gastrointestinal secretions and motility, cause drowsiness, dilate the pupils, increase heart rate, and depress motor function.

11 DESCRIPTION Scopolamine transdermal system is designed for continuous release of scopolamine following application to an area of intact skin on the head, behind the ear. Each system contains 1.237 mg of scopolamine base. Scopolamine is (9-methyl-3-oxa-9-azatricyclo[3.3.1.0 2,4 ]nonan-7-yl) 3-hydroxy-2-phenylpropanoate. The molecular formula is C 17 H 21 NO 4 and its structural formula is: Scopolamine has a molecular weight of 303.4 and a pKa of 7.55-7.81. The scopolamine transdermal system is a circular, 0.2 mm thick, 1.57 cm 2 film with four layers. Proceeding from the visible surface towards the surface attached to the skin, these layers are: (1) a backing layer of tan-colored polyethylene/polyester film; (2) a drug layer of scopolamine, povidone and silicone adhesive; (3) a microporous polypropylene membrane that controls the rate of delivery of scopolamine from the system to the skin surface; and (4) a contact layer formulation of scopolamine, povidone and silicone adhesive. A protective, oversized release liner of fluorosilicone-coated polyester, which covers the adhesive formulation layer, is removed before the system is used. Scopolamine transdermal systems are packaged with an additional piece of protective film covering the system within each pouch. This piece of protective film is removed and discarded at the time of use. Cross section of the system: Image Image

10 OVERDOSAGE Anticholinergic toxicity includes both central and peripheral signs and symptoms: agitation, central nervous system effects (e.g., coma, confusion, hallucinations, lethargy, seizures, somnolence), decreased bowel sounds, dry flushed skin, dry mouth, hyperthermia, hypertension, supraventricular arrhythmias, tachycardia, urinary retention, visual disturbances (e.g., amblyopia, mydriasis). These symptoms can be severe and may require medical intervention. In cases of toxicity, remove the scopolamine transdermal system. Serious symptomatic cases of overdosage involving multiple transdermal system applications and/or ingestion may be managed by initially ensuring the patient has an adequate airway and supporting respiration and circulation. This should be rapidly followed by removal of all transdermal systems from the skin and the mouth. If there is evidence of transdermal system ingestion, endoscopic removal of swallowed transdermal systems, or administration of activated charcoal should be considered, as indicated by the clinical situation. In any case where there is serious overdosage or signs of evolving acute toxicity, continuous monitoring of vital signs and ECG, establishment of intravenous access, and administration of oxygen are all recommended. The signs and symptoms of overdose/toxicity due to scopolamine should be carefully distinguished from the occasionally observed syndrome of withdrawal [see Warnings and Precautions (5.6) ]. Although mental confusion and dizziness may be observed with both acute toxicity and withdrawal, other characteristic findings differ: tachyarrhythmias, dry skin, and decreased bowel sounds suggest anticholinergic toxicity, while bradycardia, headache, nausea and abdominal cramps, and sweating suggest post-removal withdrawal. If over-exposure occurs, call the Poison Help line at 1-800-222-1222 for current information on the management of poisoning or overdosage.

16 HOW SUPPLIED/STORAGE AND HANDLING Scopolamine Transdermal System 1 mg/3 days is available as the following: NDC: 72162-2453-2: Carton of 4 transdermal systems, packaged into individual foil pouches. NDC: 72162-2453-4: Carton of 10 transdermal systems, packaged into individual foil pouches. NDC: 72162-2453-7: Carton of 24 transdermal systems, packaged into individual foil pouches. Store at 20°C to 25°C (68°F to 77°F) [see USP Controlled Room Temperature]. Store pouch(es) in an upright position. Do not bend or roll pouch(es). Wash hands thoroughly with soap and water immediately after handling the transdermal system. Avoid touching the system during the treatment. Upon removal, fold the used transdermal system in half with the sticky side together, and discard in household trash in a manner that prevents accidental contact or ingestion by children, pets, or others. Wash the hands and application site with soap and water after transdermal system removal [see Dosage and Administration (2.1), Warnings and Precautions (5.6)]. Repackaged/Relabeled by: Bryant Ranch Prepack Burbank, CA 91504