Atomoxetine Hydrochloride

Generic Name: atomoxetine hydrochloride

Over-the-Counter (OTC)

Brand Names:

Atomoxetine Hydrochloride

11 DESCRIPTION Atomoxetine is a selective norepinephrine reuptake inhibitor. Atomoxetine hydrochloride, USP is the R (-) isomer as determined by x-ray diffraction. The chemical designation is (-)- N -Methyl-3-phenyl-3-( o -tolyloxy)- propylamine hydrochloride. The molecular formula is C 17 H 21 NO•HCl, which corresponds to a molecular weight of 291.82. The chemical structure is: Atomoxetine hydrochloride, USP is a white to practically white solid, which has a solubility of 27.8 mg/mL in water.

Overview

11 DESCRIPTION Atomoxetine is a selective norepinephrine reuptake inhibitor. Atomoxetine hydrochloride, USP is the R (-) isomer as determined by x-ray diffraction. The chemical designation is (-)- N -Methyl-3-phenyl-3-( o -tolyloxy)- propylamine hydrochloride. The molecular formula is C 17 H 21 NO•HCl, which corresponds to a molecular weight of 291.82. The chemical structure is: Atomoxetine hydrochloride, USP is a white to practically white solid, which has a solubility of 27.8 mg/mL in water.

Uses

1 INDICATIONS AND USAGE Atomoxetine is a selective norepinephrine reuptake inhibitor indicated for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD). ( 1.1 ) 1.1 Attention-Deficit/Hyperactivity Disorder (ADHD) Atomoxetine capsules are indicated for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD). The efficacy of atomoxetine capsules was established in seven clinical trials in outpatients with ADHD: four 6 to 9-week trials in pediatric patients (ages 6 to 18), two 10-week trial in adults, and one maintenance trial in pediatrics (ages 6 to 15) [see Clinical Studies ( 14 )] .

Dosage

2 DOSAGE AND ADMINISTRATION Initial, Target and Maximum Daily Dose (2.1) (Acute and Maintenance/Extended Treatment) Body Weight Initial Daily Dose Target Total Daily Dose Maximum Total Daily Dose Children and adolescents up to 70 kg 0.5 mg/kg 1.2 mg/kg 1.4 mg/kg Children and adolescents over 70 kg and adults 40 mg 80 mg 100 mg Dosing adjustment — Hepatic Impairment, Strong CYP2D6 Inhibitor, and in patients known to be CYP2D6 poor metabolizers (PMs).

Side Effects

6 ADVERSE REACTIONS Most common adverse reactions (≥5% and at least twice the incidence of placebo patients) Child and Adolescent Clinical Trials - Nausea, vomiting, fatigue, decreased appetite, abdominal pain, and somnolence. (6.1) Adult Clinical Trials - Constipation, dry mouth, nausea, decreased appetite, dizziness, erectile dysfunction, and urinary hesitation. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact AvKARE at 855-361-3993 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Atomoxetine was administered to 5382 children or adolescent patients with ADHD and 1007 adults with ADHD in clinical studies.

Interactions

7 DRUG INTERACTIONS Monoamine Oxidase Inhibitors. (4.2, 7.1) CYP2D6 Inhibitors – Concomitant use may increase atomoxetine steady–state plasma concentrations in EMs. (7.2) Antihypertensive Drugs and Pressor Agents – Possible effects on blood pressure. (7.3) Albuterol (or other beta 2 agonists) – Action of albuterol on cardiovascular system can be potentiated. (7.4) 7.1 Monoamine Oxidase Inhibitors With other drugs that affect brain monoamine concentrations, there have been reports of serious, sometimes fatal reactions (including hyperthermia, rigidity, myoclonus, autonomic instability with possible rapid fluctuations of vital signs, and mental status changes that include extreme agitation progressing to delirium and coma) when taken in combination with an MAOI.

Warnings

WARNING: SUICIDAL IDEATION IN CHILDREN AND ADOLESCENTS Atomoxetine increased the risk of suicidal ideation in short-term studies in children or adolescents with Attention-Deficit/Hyperactivity Disorder (ADHD). Anyone considering the use of atomoxetine in a child or adolescent must balance this risk with the clinical need. Co-morbidities occurring with ADHD may be associated with an increase in the risk of suicidal ideation and/or behavior. 5 WARNINGS AND PRECAUTIONS Suicidal Ideation - Monitor for suicidality, clinical worsening, and unusual changes in behavior. (5.1) Severe Liver Injury- Should be discontinued and not restarted in patients with jaundice or laboratory evidence of liver injury. (5.2) Serious Cardiovascular Events - Sudden death, stroke and myocardial infarction have been reported in association with atomoxetine treatment. Patients should have a careful history and physical exam to assess for presence of cardiovascular disease. Atomoxetine generally should not be used in children or adolescents with known serious structural cardiac abnormalities, cardiomyopathy, serious heart rhythm abnormalities, or other serious cardiac problems that may place them at increased vulnerability to its noradrenergic effects. 4 CONTRAINDICATIONS Hypersensitivity to atomoxetine or other constituents of product. ( 4.1 ) Atomoxetine use within 2 weeks after discontinuing MAOI or other drugs that affect brain monoamine concentrations. ( 4.2 , 7.1 ) Narrow Angle Glaucoma. ( 4.3 ) Pheochromocytoma or history of pheochromocytoma.

Pregnancy

8.1 Pregnancy Pregnancy Category C - Pregnant rabbits were treated with up to 100 mg/kg/day of atomoxetine by gavage throughout the period of organogenesis. At this dose, in 1 of 3 studies, a decrease in live fetuses and an increase in early resorptions was observed. Slight increases in the incidences of atypical origin of carotid artery and absent subclavian artery were observed. These findings were observed at doses that caused slight maternal toxicity. The no-effect dose for these findings was 30 mg/kg/day.

Storage

16.1 How Supplied Atomoxetine capsules, USP 10 mg* are available for oral administration as hard gelatin capsules with a white opaque body and a white opaque cap, imprinted “APO AM10” in black ink. Atomoxetine capsules, USP 18 mg* are available for oral administration as hard gelatin capsules with a white opaque body and a gold opaque cap, imprinted “APO AM18” in black ink.

Frequently Asked Questions

What is Atomoxetine Hydrochloride used for?

1 INDICATIONS AND USAGE Atomoxetine is a selective norepinephrine reuptake inhibitor indicated for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD). ( 1.1 ) 1.1 Attention-Deficit/Hyperactivity Disorder (ADHD) Atomoxetine capsules are indicated for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD). The efficacy of atomoxetine capsules was established in seven clinical trials in outpatients with ADHD: four 6 to 9-week trials in pediatric patients (ages 6 to 18), two 10-week trial in adults, and one maintenance trial in pediatrics (ages 6 to 15) [see Clinical Studies ( 14 )] .

What are the side effects of Atomoxetine Hydrochloride?

6 ADVERSE REACTIONS Most common adverse reactions (≥5% and at least twice the incidence of placebo patients) Child and Adolescent Clinical Trials - Nausea, vomiting, fatigue, decreased appetite, abdominal pain, and somnolence. (6.1) Adult Clinical Trials - Constipation, dry mouth, nausea, decreased appetite, dizziness, erectile dysfunction, and urinary hesitation. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact AvKARE at 855-361-3993 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Atomoxetine was administered to 5382 children or adolescent patients with ADHD and 1007 adults with ADHD in clinical studies.

Can I take Atomoxetine Hydrochloride during pregnancy?

8.1 Pregnancy Pregnancy Category C - Pregnant rabbits were treated with up to 100 mg/kg/day of atomoxetine by gavage throughout the period of organogenesis. At this dose, in 1 of 3 studies, a decrease in live fetuses and an increase in early resorptions was observed. Slight increases in the incidences of atypical origin of carotid artery and absent subclavian artery were observed. These findings were observed at doses that caused slight maternal toxicity. The no-effect dose for these findings was 30 mg/kg/day.

What are the important warnings for Atomoxetine Hydrochloride?

WARNING: SUICIDAL IDEATION IN CHILDREN AND ADOLESCENTS Atomoxetine increased the risk of suicidal ideation in short-term studies in children or adolescents with Attention-Deficit/Hyperactivity Disorder (ADHD). Anyone considering the use of atomoxetine in a child or adolescent must balance this risk with the clinical need. Co-morbidities occurring with ADHD may be associated with an increase in the risk of suicidal ideation and/or behavior. 5 WARNINGS AND PRECAUTIONS Suicidal Ideation - Monitor for suicidality, clinical worsening, and unusual changes in behavior. (5.1) Severe Liver Injury- Should be discontinued and not restarted in patients with jaundice or laboratory evidence of liver injury. (5.2) Serious Cardiovascular Events - Sudden death, stroke and myocardial infarction have been reported in association with atomoxetine treatment. Patients should have a careful history and physical exam to assess for presence of cardiovascular disease. Atomoxetine generally should not be used in children or adolescents with known serious structural cardiac abnormalities, cardiomyopathy, serious heart rhythm abnormalities, or other serious cardiac problems that may place them at increased vulnerability to its noradrenergic effects. 4 CONTRAINDICATIONS Hypersensitivity to atomoxetine or other constituents of product. ( 4.1 ) Atomoxetine use within 2 weeks after discontinuing MAOI or other drugs that affect brain monoamine concentrations. ( 4.2 , 7.1 ) Narrow Angle Glaucoma. ( 4.3 ) Pheochromocytoma or history of pheochromocytoma.

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.