Omeprazole: uses, appearance and warnings

Omeprazole delayed-release capsules, USP, are a proton pump inhibitor (PPI) indicated for the: Treatment of active duodenal ulcer in adults ( 1.1 ) Eradication of Helicobacter pylori to reduce the risk of duodenal ulcer recurrence in adults ( 1.2 ) Treatment of active benign gastric ulcer in adults ( 1.3 ) Treatment of symptomatic gastroesophageal reflux disease (GERD) in patients 2 years of age and older ( 1.4 ) Treatment of erosive esophagitis (EE) due to acid-mediated GERD in patients 2 years of age and older ( 1.5 ) Maintenance of healing of EE due to acid-mediated GERD in patients 2 years of age and older ( 1.6 ) Pathologic hypersecretory conditions in adults ( 1.7 ) 1.1 Treatment of Active Duodenal Ulcer Omeprazole delayed-release capsules, USP, are indicated for short-term treatment of active duodenal ulcer in adults. Most patients heal within four weeks. Some patients may require an additional four weeks of therapy. 1.2 Helicobacter pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence Eradication of H. pylori has been shown to reduce the risk of duodenal ulcer recurrence. Triple Therapy Omeprazole delayed-release capsules in combination with clarithromycin and amoxicillin, is indicated for treatment of patients with H. pylori infection and duodenal ulcer disease (active or up to 1-year history) to eradicate H. pylori in adults. Dual Therapy Omeprazole delayed-release capsules in combination with clarithromycin are indicated for treatment of patients with H. pylori infection and duodenal ulcer disease to eradicate H. pylori in adults. Among patients who fail therapy, Omeprazole delayed-release capsules with clarithromycin are more likely to be associated with the development of clarithromycin resistance as compared with triple therapy. In patients who fail therapy, susceptibility testing should be done. If resistance to clarithromycin is demonstrated or susceptibility testing is not possible, alternative antimicrobial therapy should be instituted [see Clinical Pharmacology (12.4) and the clarithromycin prescribing information, Microbiology section]. 1.3 Treatment of Active Benign Gastric Ulcer Omeprazole delayed-release capsules are indicated for short-term treatment (4 to 8 weeks) of active benign gastric ulcer in adults. 1.4 Treatment of Symptomatic Gastroesophageal Reflux Disease (GERD) Omeprazole is indicated for the treatment of heartburn and other symptoms associated with GERD for up to 4 weeks in patients 2 years of age and older. 1.5 Treatment of Erosive Esophagitis (EE) Due to Acid-Mediated GERD Pediatric Patients 2 Years of Age to Adults Omeprazole is indicated for the short-term treatment (4 to 8 weeks) of EE due to acid-mediated GERD that has been diagnosed by endoscopy in patients 2 years of age and older. The efficacy of omeprazole used for longer than 8 weeks in patients with EE has not been established. If a patient does not respond to 8 weeks of treatment, an additional 4 weeks of treatment may be given. If there is recurrence of EE or GERD symptoms (e.g., heartburn), additional 4 to 8 week courses of Omeprazole may be considered. 1.6 Maintenance of Healing of EE Due to Acid-Mediated GERD Omeprazole is indicated for the maintenance healing of EE due to acid-mediated GERD in patients 2 years of age and older. Controlled studies do not extend beyond 12 months. 1.7 Pathological Hypersecretory Conditions Omeprazole is indicated for the long-term treatment of pathological hypersecretory conditions (e.g., Zollinger-Ellison syndrome, multiple endocrine adenomas and systemic mastocytosis) in adults.

Omeprazole delayed-release capsules, USP, 10 mg, are opaque, hard gelatin, white-colored capsules, coded in black ink "OM" on the cap and "10" on the body. Omeprazole delayed-release capsules, USP, 20 mg, are opaque, hard gelatin, white-colored capsules, coded in black ink "OM" on the cap and "20" on the body. Omeprazole delayed-release capsules, USP, 40 mg, are opaque, hard gelatin, white-colored capsules, coded in black ink "OM" on the cap and "40" on the body. Omeprazole delayed-release capsules: 10 mg, 20 mg and 40 mg ( 3 )

Omeprazole delayed-release capsules, USP, 40 mg, are opaque, hard gelatin, white-colored capsules, coded in black ink "OM" on the cap and "40" on the body. They are supplied as follows: NDC 51407-664-01 bottles of 100 NDC 51407-664-05 bottles of 500 NDC 51407-814-30 bottles of 30 NDC 51407-814-90 bottles of 90 NDC 51407-814-01 bottles of 100 NDC 51407-814-05 bottles of 500 Storage Store Omeprazole delayed-release capsules in a tight container protected from light and moisture. Store between 15°C and 30°C (59°F and 86°F).

Omeprazole delayed-release capsules are contraindicated in patients with known hypersensitivity reactions including anaphylaxis to the formulation or any substituted benzimidazole. Hypersensitivity reactions may include anaphylaxis, anaphylactic shock, angioedema, bronchospasm, acute tubulointerstitial nephritis, and urticaria [see Warnings and Precautions (5.2) , Adverse Reactions (6) ]. Proton pump inhibitors (PPIs), including Omeprazole delayed-release capsules, are contraindicated in patients receiving rilpivirine-containing products [see Drug Interactions (7) ] . For information about contraindications of antibacterial agents (clarithromycin and amoxicillin) indicated in combination with omeprazole, refer to the CONTRAINDICATIONS section of their package inserts. Patients with known hypersensitivity to substituted benzimidazoles or any component of the formulation. ( 4 ) Patients receiving rilpivirine-containing products. ( 4 , 7 ) Refer to the Contraindications section of the prescribing information for clarithromycin and amoxicillin, when administered in combination with Omeprazole delayed-release capsules. ( 4 )

Gastric Malignancy: In adults, symptomatic response does not preclude the presence of gastric malignancy. Consider additional follow-up and diagnostic testing. ( 5.1 ) Acute Tubulointerstitial Nephritis : discontinue treatment and evaluate patients. ( 5.2 ) Clostridium difficile -Associated Diarrhea: PPI therapy may be associated with increased risk. ( 5.3 ) Bone Fracture: Long-term and multiple daily dose PPI therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist or spine. ( 5.4 ) Severe Cutaneous Adverse Reactions: Discontinue at the first signs or symptoms of severe cutaneous adverse reactions or other signs of hypersensitivity and consider further evaluation ( 5.5 ) Cutaneous and Systemic Lupus Erythematosus: Mostly cutaneous; new onset or exacerbation of existing disease; discontinue Omeprazole delayed-release capsules and refer to specialist for evaluation. ( 5.6 ) Interaction with Clopidogrel: Avoid concomitant use of Omeprazole delayed-release capsules. ( 5.7 , 7 ) Cyanocobalamin (Vitamin B-12) Deficiency: Daily long-term use (e.g., longer than 3 years) may lead to malabsorption or a deficiency of cyanocobalamin. ( 5.8 ) Hypomagnesemia and Mineral Metabolism: Reported rarely with prolonged treatment with PPIs. ( 5.9 ) Interaction with St. John's Wort or Rifampin: Avoid concomitant use of Omeprazole delayed-release capsules. ( 5.10 , 7 ) Interactions with Diagnostic Investigations for Neuroendocrine Tumors: Increased Chromogranin A (CgA) levels may interfere with diagnostic investigations for neuroendocrine tumors; temporarily stop Omeprazole delayed-release capsules at least 14 days before assessing CgA levels. ( 5.11 , 7 ) Interaction with Methotrexate: Concomitant use with PPIs may elevate and/or prolong serum concentrations of methotrexate and/or its metabolite, possibly leading to toxicity. With high dose methotrexate administration, consider a temporary withdrawal of Omeprazole delayed-release capsules. ( 5.12 , 7 ) Fundic Gland Polyps : Risk increases with long-term use, especially beyond one year. Use the shortest duration of therapy. ( 5.13 ) 5.1 Presence of Gastric Malignancy In adults, symptomatic response to therapy with Omeprazole delayed-release capsules does not preclude the presence of gastric malignancy. Consider additional follow-up and diagnostic testing in adult patients who have a suboptimal response or an early symptomatic relapse after completing treatment with a PPI. In older patients, also consider an endoscopy. 5.2 Acute Tubulointerstitial Nephritis Acute tubulointerstitial nephritis (TIN) has been observed in patients taking PPIs and may occur at any point during PPI therapy. Patients may present with varying signs and symptoms from symptomatic hypersensitivity reactions, to non-specific symptoms of decreased renal function (e.g., malaise, nausea, anorexia). In reported case series, some patients were diagnosed on biopsy and in the absence of extra-renal manifestations (e.g., fever, rash or arthralgia). Discontinue Omeprazole delayed-release capsules and evaluate patients with suspected acute TIN [see Contraindications (4) ]. 5.3 Clostridium difficile -Associated Diarrhea Published observational studies suggest that PPI therapy like Omeprazole delayed-release capsules may be associated with an increased risk of Clostridium difficile -associated diarrhea, especially in hospitalized patients. This diagnosis should be considered for diarrhea that does not improve [see Adverse Reactions (6.2) ]. Patients should use the lowest dose and shortest duration of PPI therapy appropriate to the condition being treated. Clostridium difficile -associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents. For more information specific to antibacterial agents (clarithromycin and amoxicillin) indicated for use in combination with Omeprazole delayed-release capsules, refer to Warnings and Precautions sections of the corresponding prescribing information. 5.4 Bone Fracture Several published observational studies suggest that proton pump inhibitor (PPI) therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist, or spine. The risk of fracture was increased in patients who received high-dose, defined as multiple daily doses, and long-term PPI therapy (a year or longer). Patients should use the lowest dose and shortest duration of PPI therapy appropriate to the condition being treated. Patients at risk for osteoporosis-related fractures should be managed according to established treatment guidelines [see Dosage and Administration (2.1) , Adverse Reactions (6.3) ]. 5.5 Severe Cutaneous Adverse Reactions Severe cutaneous adverse reactions, including Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), drug reaction with eosinophilia and systemic symptoms (DRESS), and acute generalized exanthematous pustulosis (AGEP) have been reported in association with the use of PPIs [see Adverse Reactions (6.2) ] . Discontinue Omeprazole delayed-release capsules at the first signs or symptoms of severe cutaneous adverse reactions or other signs of hypersensitivity and consider further evaluation. 5.6 Cutaneous and Systemic Lupus Erythematosus Cutaneous lupus erythematosus (CLE) and systemic lupus erythematosus (SLE) have been reported in patients taking PPIs, including omeprazole. These events have occurred as both new onset and an exacerbation of existing autoimmune disease. The majority of PPI-induced lupus erythematosus cases were CLE. The most common form of CLE reported in patients treated with PPIs was subacute CLE (SCLE) and occurred within weeks to years after continuous drug therapy in patients ranging from infants to the elderly. Generally, histological findings were observed without organ involvement. Systemic lupus erythematosus (SLE) is less commonly reported than CLE in patients receiving PPIs. …

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) ] Cutaneous and Systemic Lupus Erythematosus [see Warnings and Precautions (5.6) ] Cyanocobalamin (Vitamin B-12) Deficiency [see Warnings and Precautions (5.8) ] Hypomagnesemia [see Warnings and Precautions (5.9) ] Fundic Gland Polyps [see Warnings and Precautions (5.13) ] Adults: Most common adverse reactions in adults (incidence ≥2%) are Headache, abdominal pain, nausea, diarrhea, vomiting, and flatulence. …

Tables 3 and 4 include drugs with clinically important drug interactions and interaction with diagnostics when administered concomitantly with Omeprazole delayed-release capsules 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 Co-Administered with Omeprazole Delayed-release Capsules and Interaction with Diagnostics Antiretrovirals Clinical Impact: The effect of PPIs on antiretroviral drugs is variable. The clinical importance and the mechanisms behind these interactions are not always known. …