Omeprazole and Sodium Bicarbonate powder for oral suspension Ajanta Pharma Ltd ...

37 Pages·2015·0.4 MB·English

by  Ajanta Pharma Limited

Omeprazole and Sodium Bicarbonate powder for oral suspension

Ajanta Pharma Ltd.

HIGHLIGHTS OF PRESCRIBING INFORMATION
These highlights do not include all the information needed to use OMEPRAZOLE AND SODIUM
BICARBONATE POWDER FOR ORAL SUSPENSION safely and effectively. See Full Prescribing
Information for OMEPRAZOLE AND SODIUM BICARBONATE POWDER FOR ORAL
SUSPENSION.

OMEPRAZOLE AND SODIUM BICARBONATE powder for oral suspension
Initial U.S. Approval: 2004

------------------------------------------- INDICATIONS AND USAGE --------------------------------------------
Omeprazole and Sodium Bicarbonate powder for oral suspension is a proton pump inhibitor indicated for:
 Short-term treatment of active duodenal ulcer (1.1)
 Short-term treatment of active benign gastric ulcer (1.2)
 Treatment of gastroesophageal reflux disease (GERD) (1.3)
 Maintenance of healing of erosive esophagitis (1.4)
 Reduction of risk of upper GI bleeding in critically ill patients (1.5)

The safety and effectiveness of Omeprazole and Sodium Bicarbonate powder for oral suspension in
pediatric patients (<18 years of age) have not been established. (8.4)

-------------------------------------- DOSAGE AND ADMINISTRATION --------------------------------------
 Short-Term Treatment of Active Duodenal Ulcer: 20 mg once daily for 4 weeks (some patients may
require an additional 4 weeks of therapy (14.1))(2)
 Gastric Ulcer: 40 mg once daily for 4-8 weeks (2)
 Gastroesophageal Reflux Disease (GERD) (2)
- Symptomatic GERD (with no esophageal erosions): 20 mg once daily for up to 4 weeks
- Erosive Esophagitis: 20 mg once daily for 4-8 weeks
 Maintenance of Healing of Erosive Esophagitis: 20 mg once daily*(2)
 Reduction of Risk of Upper Gastrointestinal Bleeding in Critically Ill Patients: (40 mg oral
suspension only) 40 mg initially followed by 40 mg 6-8 hours later and 40 mg daily thereafter for 14
days (2)
*studied for 12 months

-------------------------------------- DOSAGE FORMS AND STRENGTHS ------------------------------------
 Omeprazole and Sodium Bicarbonate is available as a powder for oral suspension in 20 mg and 40
mg strengths (3)

---------------------------------------------- CONTRAINDICATIONS ----------------------------------------------
 Known hypersensitivity to any components of the formulation (4)

--------------------------------------- WARNINGS AND PRECAUTIONS ----------------------------------------
 Concomitant Gastric Malignancy: Symptomatic response to therapy with Omeprazole and Sodium
Bicarbonate powder for oral suspension does not preclude the presence of gastric malignancy (5.1)

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 Atrophic Gastritis: Has been observed in gastric corpus biopsies from patients treated long-term with
omeprazole (5.2)
 Acute interstitial nephritis has been observed in patients taking PPIs. (5.3)
 Cyanocobalamin (vitamin B-12) Deficiency: Daily long-term use (e.g., longer than 3 years) may lead
to malabsorption or a deficiency of cyanocobalamin. (5.4)
 Buffer Content: contains sodium bicarbonate (5.5)
 PPI therapy may be associated with increased risk of Clostridium difficile associated diarrhea. (5.6)
 Avoid concomitant use of Omeprazole and Sodium Bicarbonate powder for oral suspension with
clopidogrel (5.7)
 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. (5.8)
 Hypomagnesemia has been reported rarely with prolonged treatment with PPIs (5.9)
 Avoid concomitant use of Omeprazole and Sodium Bicarbonate powder for oral suspension with St
John’s Wort or rifampin due to the potential reduction in omeprazole concentrations (5.10, 7.2)
 Interactions with diagnostic investigations for Neuroendocrine Tumors: Increases in intragastric pH
may result in hypergastrinemia and enterochromaffin-like cell hyperplasia and increased
Choromogranin A levels which may interfere with diagnostic investigations for neuroendocrine
tumors. (5.11, 12.2)

---------------------------------------------- ADVERSE REACTIONS -----------------------------------------------
Most common adverse reactions (incidence ≥ 2%) are:
Headache, abdominal pain, nausea, diarrhea, vomiting, and flatulence (6)

To report SUSPECTED ADVERSE REACTIONS, contact Ajanta Pharma USA Inc. at 855-664-
7744 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

---------------------------------------------- DRUG INTERACTIONS ----------------------------------------------
 May interfere with drugs for which gastric pH can affect bioavailability (e.g., ketoconazole,
ampicillin esters, iron salts, erlotinib, digoxin, and mycophenolate mofetil) (7.1)
 Drugs metabolized by cytochrome P450 (e.g., diazepam, warfarin, phenytoin, cyclosporine,
disulfiram, benzodiazepines): Omeprazole and Sodium Bicarbonate powder for oral suspension can
prolong their elimination. Monitor to determine the need for possible dose adjustments when taken
with Omeprazole and Sodium Bicarbonate powder for oral suspension (7.2)
 Patients treated with proton pump inhibitors and warfarin concomitantly may need to be monitored
for increases in INR and prothrombin time (7.2)
 Voriconazole: May increase plasma levels of omeprazole (7.2)
 Saquinavir: Omeprazole and Sodium Bicarbonate powder for oral suspension increases plasma levels
of saquinavir (7.3)
 Omeprazole and Sodium Bicarbonate powder for oral suspension may reduce plasma levels of
atazanavir and nelfinavir (7.3)
 Clopidogrel: Omeprazole and Sodium Bicarbonate powder for oral suspension decreases exposure to
the active metabolite of clopidogrel (7.5)
 Tacrolimus: Omeprazole and Sodium Bicarbonate powder for oral suspension may increase serum
levels of tacrolimus (7.6)
 Methotrexate: Omeprazole and Sodium Bicarbonate powder for oral suspension may increase serum
level of methotrexate (7.8)

--------------------------------------- USE IN SPECIFIC POPULATIONS ----------------------------------------
 Pregnancy: Based upon animal data, may cause fetal harm (8.1)

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 The safety and effectiveness of Omeprazole and Sodium Bicarbonate powder for oral suspension in
pediatric patients less than 18 years of age have not been established. (8.4)
 Hepatic Impairment: Consider dose reduction, particularly for maintenance of healing of erosive
esophagitis (12.3)

See 17 for PATIENT COUNSELING INFORMATION and Medication Guide

Revised: 02/2016

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FULL PRESCRIBING INFORMATION: CONTENTS *

1 INDICATIONS AND USAGE
1.1 Duodenal Ulcer
1.2 Gastric Ulcer
1.3 Treatment of Gastroesophageal Reflux Disease (GERD)
1.4 Maintenance of Healing of Erosive Esophagitis
1.5 Reduction of Risk of Upper Gastrointestinal Bleeding in Critically Ill Patients (40 mg oral
suspension only)
2 DOSAGE AND ADMINISTRATION
3 DOSAGE FORMS AND STRENGTHS
4 CONTRAINDICATIONS
5 WARNINGS AND PRECAUTIONS
5.1 Concomitant Gastric Malignancy
5.2 Atrophic Gastritis
5.3 Acute Interstitial Nephritis
5.4 Cyanocobalamin (vitamin B-12) Deficiency
5.5 Buffer Content
5.6 Clostridium Difficile Associated Diarrhea
5.7 Interaction with Clopidogrel
5.8 Bone Fracture
5.9 Hypomagnesemia
5.10 Concomitant Use of Omeprazole and Sodium Bicarbonate powder for oral suspension with St
John’s Wort or Rifampin
5.11 Interactions with Investigations for Neuroendocrine Tumors
5.12 Concomitant Use of Omeprazole and Sodium Bicarbonate powder for oral suspension with
Methotrexate
6 ADVERSE REACTIONS
6.1 Clinical Trials Experience
6.2 Postmarketing Experience
7 DRUG INTERACTIONS
7.1 Drugs for Which Gastric pH Can Affect Bioavailability
7.2 Drugs Metabolized by Cytochrome P450 (CYP)
7.3 Antiretroviral Agents
7.4 Combination Therapy with Clarithromycin
7.5 Clopidogrel
7.6 Tacrolimus
7.7 Interactions With Investigations of Neuroendocrine Tumors
7.8 Methotrexate
8 USE IN SPECIFIC POPULATIONS
8.1 Pregnancy
8.3 Nursing Mothers
8.4 Pediatric Use
8.5 Geriatric Use
8.6 Hepatic Impairment
8.7 Renal Impairment
8.8 Asian Population
10 OVERDOSAGE
11 DESCRIPTION
12 CLINICAL PHARMACOLOGY
12.1 Mechanism of Action

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12.2 Pharmacodynamics
12.3 Pharmacokinetics
13 NONCLINICAL TOXICOLOGY
13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility
13.2 Animal Toxicology and/or Pharmacology
14 CLINICAL STUDIES
14.1 Duodenal Ulcer Disease
14.2 Gastric Ulcer
14.3 Gastroesophageal Reflux Disease (GERD)
14.4 Long Term Maintenance Treatment of Erosive Esophagitis
14.5 Reduction of Risk of Upper Gastrointestinal Bleeding in Critically Ill Patients
15 REFERENCES
16 HOW SUPPLIED/STORAGE AND HANDLING
17 PATIENT COUNSELING INFORMATION

* Sections or subsections omitted from the full prescribing information are not listed.

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FULL PRESCRIBING INFORMATION:

1 INDICATIONS AND USAGE

1.1 Duodenal Ulcer

Omeprazole and Sodium Bicarbonate powder for oral suspension is indicated for short-term treatment of
active duodenal ulcer. Most patients heal within four weeks. Some patients may require an additional four
weeks of therapy. [See Clinical Studies (14.1)]

1.2 Gastric Ulcer

Omeprazole and Sodium Bicarbonate powder for oral suspension is indicated for short-term treatment (4-
8 weeks) of active benign gastric ulcer. [See Clinical Studies (14.2)]

1.3 Treatment of Gastroesophageal Reflux Disease (GERD)

Symptomatic GERD
Omeprazole and Sodium Bicarbonate powder for oral suspension is indicated for the treatment of
heartburn and other symptoms associated with GERD for up to 4 weeks. [See Clinical Studies (14.3)]

Erosive Esophagitis
Omeprazole and Sodium Bicarbonate powder for oral suspension is indicated for the short-term treatment
(4-8 weeks) of erosive esophagitis which has been diagnosed by endoscopy.

The efficacy of Omeprazole and Sodium Bicarbonate powder for oral suspension used for longer than 8
weeks in these patients has not been established. If a patient does not respond to 8 weeks of treatment, it
may be helpful to give up to an additional 4 weeks of treatment. If there is recurrence of erosive
esophagitis or GERD symptoms (e.g., heartburn), additional 4-8 week courses of Omeprazole and
Sodium Bicarbonate powder for oral suspension may be considered. [See Clinical Studies (14.3)]

1.4 Maintenance of Healing of Erosive Esophagitis

Omeprazole and Sodium Bicarbonate powder for oral suspension is indicated to maintain healing of
erosive esophagitis. Controlled studies do not extend beyond 12 months. [See Clinical Studies (14.4)]

1.5 Reduction of Risk of Upper Gastrointestinal Bleeding in Critically Ill Patients (40 mg oral
suspension only)

Omeprazole and Sodium Bicarbonate Powder for Oral Suspension 40 mg/1680 mg is indicated for the
reduction of risk of upper GI bleeding in critically ill patients. [See Clinical Studies, Reduction of Risk of
Upper Gastrointestinal Bleeding in Critically Ill Patients (14.5)]

2 DOSAGE AND ADMINISTRATION

Omeprazole and Sodium Bicarbonate is available as a powder for oral suspension in 20 mg and 40 mg
strengths of omeprazole for adult use. Directions for use for each indication are summarized in Table 1.
All recommended doses throughout the labeling are based upon omeprazole.

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Since both the 20 mg and 40 mg oral suspension packets contain the same amount of sodium bicarbonate
(1680 mg), two packets of 20 mg are not equivalent to one packet of Omeprazole and Sodium
Bicarbonate powder for oral suspension 40 mg; therefore, two 20 mg packets of Omeprazole and Sodium
Bicarbonate powder for oral suspension should not be substituted for one packet of Omeprazole and
Sodium Bicarbonate powder for oral suspension 40 mg.

Omeprazole and Sodium Bicarbonate powder for oral suspension should be taken on an empty stomach at
least one hour before a meal.

For patients receiving continuous Nasogastric (NG)/ Orogastric (OG) tube feeding, enteral feeding should
be suspended approximately 3 hours before and 1 hour after administration of Omeprazole and Sodium
Bicarbonate Powder for Oral Suspension.

Table 1: Recommended Doses of Omeprazole and Sodium Bicarbonate powder for oral suspension
by Indication for Adults 18 Years and Older

Indication Recommended Dose Frequency
Short-Term Treatment of Active 20 mg Once daily for 4 weeks*,+
Duodenal Ulcer

Benign Gastric Ulcer 40 mg Once daily for 4-8 weeks **,+

Gastroesophageal Reflux Disease
(GERD)
Symptomatic GERD (with no 20 mg Once daily for up to 4 weeks+
esophageal erosions)
Erosive Esophagitis 20 mg Once daily for 4-8 weeks+

Maintenance of Healing of 20 mg Once daily**
Erosive Esophagitis

Reduction of Risk of Upper 40 mg initially followed by
Gastrointestinal Bleeding in 40 mg 40 mg 6-8 hours later and
Critically Ill Patients 40 mg daily thereafter for
(40 mg oral suspension only) 14 days**
* Most patients heal within 4 weeks. Some patients may require an additional 4 weeks of therapy. [See Clinical
Studies (14.1)]
**Controlled studies do not extend beyond 12 months.[See Clinical Studies (14)]
+ For additional information, [See Indications and Usage (1)]

Special Populations
Hepatic Insufficiency
Consider dose reduction, particularly for maintenance of healing of erosive esophagitis. [See Clinical
Pharmacology (12.3)]

Preparation and Administration of Suspension
Directions for use: Empty packet contents into a small cup containing 1-2 tablespoons of water. DO NOT
USE OTHER LIQUIDS OR FOODS. Stir well and drink immediately. Refill cup with water and drink.

If Omeprazole and Sodium Bicarbonate powder for oral suspension is to be administered through a
nasogastric (NG) or orogastric (OG) tube, the suspension should be constituted with approximately 20
mL of water. DO NOT USE OTHER LIQUIDS OR FOODS. Stir well and administer immediately. An

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appropriately-sized syringe should be used to instill the suspension in the tube. The suspension should be
washed through the tube with 20 mL of water.

3 DOSAGE FORMS AND STRENGTHS

Omeprazole and Sodium Bicarbonate Powder for Oral Suspension is a white to off-white, flavored
powder packaged in unit-dose packets. Each packet contains either 20 mg or 40 mg omeprazole and 1680
mg sodium bicarbonate.

4 CONTRAINDICATIONS

Omeprazole and Sodium Bicarbonate powder for oral suspension is contraindicated in patients with
known hypersensitivity to any components of the formulation. Hypersensitivity reactions may include
anaphylaxis, anaphylactic shock, angioedema, bronchospasm, acute interstitial nephritis, and urticaria.
[See Adverse Reactions (6)]

5 WARNINGS AND PRECAUTIONS

5.1 Concomitant Gastric Malignancy

Symptomatic response to therapy with omeprazole does not preclude the presence of gastric malignancy.

5.2 Atrophic Gastritis

Atrophic gastritis has been noted occasionally in gastric corpus biopsies from patients treated long-term
with omeprazole.

5.3 Acute Interstitial Nephritis

Acute interstitial nephritis has been observed in patients taking PPIs including Omeprazole and Sodium
Bicarbonate powder for oral suspension. Acute interstitial nephritis may occur at any point during PPI
therapy and is generally attributed to an idiopathic hypersensitivity reaction. Discontinue Omeprazole and
Sodium Bicarbonate powder for oral suspension if acute interstitial nephritis develops. [See
Contraindications (4)].

5.4 Cyanocobalamin (vitamin B-12) Deficiency

Daily treatment with any acid-suppressing medications over a long period of time (e.g., longer than 3
years) may lead to malabsorption of cyanocobalamin (vitamin B-12) caused by hypo- or achlorhydria.
Rare reports of cyanocobalamin deficiency occurring with acid-suppressing therapy have been reported in
the literature. This diagnosis should be considered if clinical symptoms consistent with cyanocobalamin
deficiency are observed.

5.5 Buffer Content

Each packet of Omeprazole and Sodium Bicarbonate Powder for Oral Suspension contains 1680 mg (20
mEq) of sodium bicarbonate (equivalent to 460 mg of Na+).

The sodium content of Omeprazole and Sodium Bicarbonate products should be taken into consideration
when administering to patients on a sodium restricted diet.

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Because Omeprazole and Sodium Bicarbonate products contain sodium bicarbonate, they should be used
with caution in patients with Bartter's syndrome, hypokalemia, hypocalcemia, and problems with acid-
base balance. Long-term administration of bicarbonate with calcium or milk can cause milk-alkali
syndrome.

Chronic use of sodium bicarbonate may lead to systemic alkalosis and increased sodium intake can
produce edema and weight increase.

5.6 Clostridium Difficile Associated Diarrhea

Published observational studies suggest that PPI therapy like Omeprazole and Sodium Bicarbonate
powder for oral suspension 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.

5.7 Interaction with Clopidogrel

Avoid concomitant use of Omeprazole and Sodium Bicarbonate powder for oral suspension with
clopidogrel. Clopidogrel is a prodrug. Inhibition of platelet aggregation by clopidogrel is entirely due to
an active metabolite. The metabolism of clopidogrel to its active metabolite can be impaired by use with
concomitant medications, such as omeprazole, that interfere with CYP2C19 activity. Concomitant use of
clopidogrel with 80 mg omeprazole reduces the pharmacological activity of clopidogrel, even when
administered 12 hours apart. When using Omeprazole and Sodium Bicarbonate powder for oral
suspension, consider alternative anti-platelet therapy. [See Drug Interactions (7.5) and Pharmacokinetics
(12.3)].

5.8 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 the established treatment guidelines. [See Dosage and Administration (2) and
Adverse Reactions (6.2)]

5.9 Hypomagnesemia

Hypomagnesemia, symptomatic and asymptomatic, has been reported rarely in patients treated with PPIs
for at least three months, in most cases after a year of therapy. Serious adverse events include tetany,
arrhythmias, and seizures. In most patients, treatment of hypomagnesemia required magnesium
replacement and discontinuation of the PPI.

For patients expected to be on prolonged treatment or who take PPIs with medications such as digoxin or
drugs that may cause hypomagnesemia (e.g.,diuretics), health care professionals may consider monitoring
magnesium levels prior to initiation of PPI treatment and periodically. [See Adverse Reactions (6.2)]

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5.10 Concomitant Use of Omeprazole and Sodium Bicarbonate powder for oral suspension with St
John’s Wort or Rifampin

Drugs which induce CYP2C19 OR CYP34A (such as St John’s Wort or rifampin) can substantially
decrease omeprazole concentrations [See Drug Interactions (7.2)]. Avoid concomitant use of Omeprazole
and Sodium Bicarbonate powder for oral suspension with St John’s Wort or rifampin.

5.11 Interactions with Investigations for Neuroendocrine Tumors

Serum chromogranin A (CgA) levels increase secondary to drug-induced decreases in gastric acidity. The
increased CgA level may cause false positive results in diagnostic investigations for neuroendocrine
tumors. Providers should temporarily stop omeprazole treatment before assessing CgA levels and
consider repeating the test if initial CgA levels are high. If serial tests are performed (e.g. for monitoring),
the same commercial laboratory should be used for testing, as reference ranges between tests may vary.
[See Pharmacodynamics (12.2)].

5.12 Concomitant Use of Omeprazole and Sodium Bicarbonate powder for oral suspension with
Methotrexate

Literature suggests that concomitant use of PPIs with methotrexate (primarily at high dose; see
methotrexate prescribing information) may elevate and prolong serum levels of methotrexate and/or its
metabolite, possibly leading to methotrexate toxicities. In high-dose methotrexate administration, a
temporary withdrawal of the PPI may be considered in some patients. [See Drug Interactions (7.8)].

6 ADVERSE REACTIONS

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 clinical practice.

In the U.S. clinical trial population of 465 patients, the adverse reactions summarized in Table 2 were
reported to occur in 1% or more of patients on therapy with omeprazole. Numbers in parentheses indicate
percentages of the adverse reactions considered by investigators as possibly, probably or definitely related
to the drug.

Table 2: Adverse Reactions Occurring In 1% or More of Patients on Omeprazole Therapy

Omeprazole Placebo Ranitidine
(n = 465) (n = 64) (n = 195)
Headache 6.9 (2.4) 6.3 7.7 (2.6)

Diarrhea 3.0 (1.9) 3.1 (1.6) 2.1 (0.5)

Abdominal Pain 2.4 (0.4) 3.1 2.1

Nausea 2.2 (0.9) 3.1 4.1 (0.5)

URI 1.9 1.6 2.6

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