Overview
11 DESCRIPTION The active ingredient in dexlansoprazole delayed-release capsules, a proton pump inhibitor, is (+)-2-[(R)-{[3-methyl-4-(2,2,2-trifluoroethoxy)pyridin-2-yl] methyl} sulfinyl]- 1H -benzimidazole, a compound that inhibits gastric acid secretion. Dexlansoprazole is the R -enantiomer of lansoprazole (a racemic mixture of the R -and S -enantiomers).
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Dexlansoprazole belongs to a class of antisecretory compounds, the substituted benzimidazoles, that suppress gastric acid secretion by specific inhibition of the (H + , K + )-ATPase at the secretory surface of the gastric parietal cell. Because this enzyme is regarded as the acid (proton) pump within the parietal cell, dexlansoprazole has been characterized as a gastric proton-pump inhibitor, in that it blocks the final step of acid production. 12.2 Pharmacodynamics Antisecretory Activity The effects of dexlansoprazole 60 mg (n=20) or lansoprazole 30 mg (n=23) once daily for five days on 24 hour intragastric pH were assessed in healthy subjects in a multiple-dose crossover study. The results are summarized in Table 5 . Table 5.
Indications
- 1 INDICATIONS AND USAGE Dexlansoprazole delayed-release capsules are a proton pump inhibitor (PPI) indicated in patients 12 years of age and older for: • Healing of all grades of erosive esophagitis (EE). ( 1.1 ) • Maintenance of healed EE and relief of heartburn. ( 1.2 ) • Treatment of symptomatic non-erosive gastroesophageal reflux disease (GERD). ( 1.3 ) 1.1 Healing of Erosive Esophagitis Dexlansoprazole delayed-release capsules are indicated in patients 12 years of age and older for healing of all grades of erosive esophagitis (EE) for up to eight weeks. 1.
Common Doses
- 60 mg
- 30 mg
- 20 mL
- 10 mL
Dosage
2 DOSAGE AND ADMINISTRATION Recommended dosage in patients 12 years of age and older: • See full prescribing information for complete dosing information for dexlansoprazole delayed-release capsules by indication and age group and dosage adjustment in patients with hepatic impairment. ( 2.1 , 2.2 ) Administration Instructions ( 2.3 ): • Take without regard to food. • Swallow whole; do not chew. • See full prescribing information for alternative administration options. 2.1 Recommended Dosage in Patients 12 Years of Age and Older Table 1.
Contraindications
- 4 CONTRAINDICATIONS • Dexlansoprazole delayed-release capsules are contraindicated in patients with known hypersensitivity to any component of the formulation [see Description (11)] . Hypersensitivity reactions may include anaphylaxis, anaphylactic shock, angioedema, bronchospasm, acute tubulointerstitial nephritis and urticaria [see Warnings and Precautions (5.2), Adverse Reactions (6)]. • PPIs, including dexlansoprazole delayed-release capsules, are contraindicated with rilpivirine-containing products [see Drug Interactions (7)].
Side Effects
- 6 ADVERSE REACTIONS The following serious adverse reactions are described below and elsewhere in labeling: • Acute Tubulointerstitial Nephritis [see Warnings and Precautions (5.2)] • Clostridium difficile -Associated Diarrhea [see Warnings and Precautions (5.3)] • Bone Fracture [see Warnings and Precautions (5.4)] • Severe Cutaneous Adverse Reactions [see Warnings and Precautions (5.5)] • Cutaneous and Systemic Lupus Erythematosus [see Warnings and Precautions (5.6)] • Cyanocobalamin (Vitamin B12) Deficiency [see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS Tables 3 and 4 include drugs with clinically important drug interactions and interaction with diagnostics when administered concomitantly with dexlansoprazole and instructions for preventing or managing them. Consult the labeling of concomitantly used drugs to obtain further information about interactions with PPIs. Table 3. Clinically Relevant Interactions Affecting Drugs Coadministered with Dexlansoprazole and Interactions with Diagnostics Antiretrovirals Clinical Impact: The effect of PPIs on antiretroviral drugs is variable.