Data from FDA - Curated by EPG Health - Last updated 05 July 2018

Indication(s)

1 INDICATIONS AND USAGE ACIPHEX delayed-release tablets is a proton pump inhibitor (PPI) indicated in adults for: Healing of Erosive or Ulcerative Gastroesophageal Reflux Disease (GERD) (1.1). Maintenance of Healing of Erosive or Ulcerative GERD (1.2). Treatment of Symptomatic GERD (1.3). Healing of Duodenal Ulcers (1.4). Helicobacter pylori Eradication to Reduce Risk of Duodenal Ulcer Recurrence (1.5). Treatment of Pathological Hypersecretory Conditions, Including Zollinger-Ellison Syndrome (1.6). In adolescent patients 12 years of age and older for: Short-term Treatment of Symptomatic GERD (1.7). 1.1 Healing of Erosive or Ulcerative GERD in Adults ACIPHEX delayed-release tablets are indicated for short-term (4 to 8 weeks) treatment in the healing and symptomatic relief of erosive or ulcerative gastroesophageal reflux disease (GERD). For those patients who have not healed after 8 weeks of treatment, an additional 8-week course of ACIPHEX may be considered. 1.2 Maintenance of Healing of Erosive or Ulcerative GERD in Adults ACIPHEX delayed-release tablets are indicated for maintaining healing and reduction in relapse rates of heartburn symptoms in patients with erosive or ulcerative gastroesophageal reflux disease (GERD Maintenance). Controlled studies do not extend beyond 12 months. 1.3 Treatment of Symptomatic GERD in Adults ACIPHEX delayed-release tablets are indicated for the treatment of daytime and nighttime heartburn and other symptoms associated with GERD in adults for up to 4 weeks. 1.4 Healing of Duodenal Ulcers in Adults ACIPHEX delayed-release tablets are indicated for short-term (up to four weeks) treatment in the healing and symptomatic relief of duodenal ulcers. Most patients heal within four weeks. 1.5 Helicobacter pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence in Adults ACIPHEX delayed-release tablets, in combination with amoxicillin and clarithromycin as a three drug regimen, are indicated for the treatment of patients with H. pylori infection and duodenal ulcer disease (active or history within the past 5 years) to eradicate H. pylori. Eradication of H. pylori has been shown to reduce the risk of duodenal ulcer recurrence. 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 (12.2) and the full prescribing information for clarithromycin]. 1.6 Treatment of Pathological Hypersecretory Conditio ns, Including Zollinger-Ellison Syndrome in Adults ACIPHEX delayed-release tablets are indicated for the long-term treatment of pathological hypersecretory conditions, including Zollinger-Ellison syndrome. 1.7 Treatment of Symptomatic GERD in Adolescent Patients 12 Years of Age and Older ACIPHEX delayed-release tablets are indicated for the treatment of symptomatic GERD in adolescents 12 years of age and above for up to 8 weeks.

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Advisory information

contraindications
4 CONTRAINDICATIONS ACIPHEX is contraindicated in patients with known hypersensitivity to rabeprazole, substituted benzimidazoles, or to any component of the formulation. Hypersensitivity reactions may include anaphylaxis, anaphylactic shock, angioedema, bronchospasm, acute interstitial nephritis, and urticaria [see Adverse Reactions (6) ]. PPIs, including ACIPHEX, are contraindicated with rilpivirine-containing products [see Drug Interactions (7) ]. For information about contraindications of antibacterial agents (clarithromycin and amoxicillin) indicated in combination with ACIPHEX delayed-release tablets, refer to the Contraindications section of their package inserts. Patients with a history of hypersensitivity to rabeprazole (4). PPIs, including ACIPHEX delayed-release tablets, are contraindicated in 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 ACIPHEX (4).
Adverse reactions
6 ADVERSE REACTIONS The following serious adverse reactions are described below and elsewhere in labeling: Acute Interstitial Nephritis [see Warnings and Precautions (5.3) ] Clostridium difficile-Associated Diarrhea [see Warnings and Precautions (5.4) ] Bone Fracture [see Warnings and Precautions (5.5) ] Cutaneous and Systemic Lupus Erythematosus [see Warnings and Precautions (5.6) ] Cyanocobalamin (Vitamin B-12) Deficiency [see Warnings and Precautions (5.7) ] Hypomagnesemia [see Warnings and Precautions (5.8) ] Fundic Gland Polyps [see Warnings and Precautions ( 5.10 )] Most common adverse reactions in adults (>2%) are pain, pharyngitis, flatulence, infection, and constipation (6.1). Most common adverse reactions in adolescents (≥2%) are headache, diarrhea, nausea, vomiting, and abdominal pain (6.1). To report SUSPECTED ADVERSE REACTIONS, contact Eisai Inc. at 1-888-274-2378 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Studies Experience Because clinical trials are conducted under 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. Adults The data described below reflect exposure to ACIPHEX delayed-release tablets in 1064 adult patients exposed for up to 8 weeks. The studies were primarily placebo- and active-controlled trials in adult patients with Erosive or Ulcerative Gastroesophageal Reflux Disease (GERD), Duodenal Ulcers and Gastric Ulcers. The population had a mean age of 53 years (range 18-89 years) and had a ratio of approximately 60% male: 40% female. The racial distribution was 86% Caucasian, 8% African American, 2% Asian, and 5% other. Most patients received either 10 mg, 20 mg or 40 mg per day of ACIPHEX delayed-release tablets. An analysis of adverse reactions appearing in ≥2% of patients treated with ACIPHEX delayed-release tablets (n=1064) and with a greater frequency than placebo (n=89) in controlled North American and European acute treatment trials, revealed the following adverse reactions: pain (3% vs. 1%), pharyngitis (3% vs. 2%), flatulence (3% vs. 1%), infection (2% vs. 1%), and constipation (2% vs. 1%). Three long-term maintenance studies consisted of a total of 740 adult patients; at least 54% of adult patients were exposed to ACIPHEX delayed-release tablets for 6 months and at least 33% were exposed for 12 months. Of the 740 adult patients, 247 (33%) and 241 (33%) patients received 10 mg and 20 mg of ACIPHEX delayed-release tablets, respectively, while 169 (23%) patients received placebo and 83 (11%) received omeprazole. The safety profile of rabeprazole in the maintenance studies in adults was consistent with what was observed in the acute studies. Less common adverse reactions seen in controlled clinical trials (<2% of patients treated with ACIPHEX delayed-release tablets and greater than placebo) and for which there is a possibility of a causal relationship to rabeprazole, include the following: headache, abdominal pain, diarrhea, dry mouth, dizziness, peripheral edema, hepatic enzyme increase, hepatitis, hepatic encephalopathy, myalgia, and arthralgia. Combination Treatment with Amoxicillin and Clarithromycin: In clinical trials using combination therapy with rabeprazole plus amoxicillin and clarithromycin (RAC), no adverse reactions unique to this drug combination were observed. In the U.S. multicenter study, the most frequently reported drug related adverse reactions for patients who received RAC therapy for 7 or 10 days were diarrhea (8% and 7%) and taste perversion (6% and 10%), respectively. No clinically significant laboratory abnormalities particular to the drug combinations were observed. For more information on adverse reactions or laboratory changes with amoxicillin or clarithromycin, refer to their respective prescribing information, Adverse Reactions section. Pediatric s In a multicenter, open-label study of adolescent patients 12 to 16 years of age with a clinical diagnosis of symptomatic GERD or endoscopically proven GERD, the adverse event profile was similar to that of adults. The adverse reactions reported without regard to relationship to ACIPHEX delayed-release tablets that occurred in ≥2% of 111 patients were headache (9.9%), diarrhea (4.5%), nausea (4.5%), vomiting (3.6%), and abdominal pain (3.6%). The related reported adverse reactions that occurred in ≥2% of patients were headache (5.4%) and nausea (1.8%). There were no adverse reactions reported in this study that were not previously observed in adults. 6.2 Postmarketing Experience The following adverse reactions have been identified during post approval use of rabeprazole. 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: Blood and Lymphatic System Disorders: agranulocytosis, hemolytic anemia, leukopenia, pancytopenia, thrombocytopenia Ear and Labyrinth Disorders: vertigo Eye Disorders: blurred vision Gastrointestinal Disorders: fundic gland polyps General Disorders and Administration Site Conditions: sudden death Hepatobiliary Disorders: jaundice Immune System Disorders: anaphylaxis, angioedema, systemic lupus erythematosus, Stevens-Johnson syndrome, toxic epidermal necrolysis (some fatal) Infections and Infestations: Clostridium difficile-associated diarrhea Investigations: Increases in prothrombin time/INR (in patients treated with concomitant warfarin), TSH elevations Metabolism and Nutrition Disorders: hyperammonemia, hypomagnesemia Musculoskeletal System Disorders: bone fracture, rhabdomyolysis Nervous System Disorders: coma Psychiatric Disorders: delirium, disorientation Renal and Urinary Disorders: interstitial nephritis Respiratory, Thoracic and Mediastinal Disorders: interstitial pneumonia Skin and Subcutaneous Tissue Disorders: severe dermatologic reactions including bullous and other drug eruptions of the skin, cutaneous lupus erythematosus, erythema multiforme

Usage information

Dosing and administration
2 DOSAGE AND ADMINISTRATION Table 1 shows the recommended dosage of ACIPHEX delayed-release tablets in adults and adolescent patients 12 years of age and older. The use of ACIPHEX delayed-release tablets is not recommended for use in pediatric patients 1 year to less than 12 years of age because the lowest available tablet strength (20 mg) exceeds the recommended dose for these patients. Use another rabeprazole formulation for pediatric patients 1 year to less than 12 years of age. Table 1: Recommended Dosage and Duration of ACIPHEX Delayed-Release Tablets in Adults and Adolescents 12 Years of Age and Older Indication Dosage of ACIPHEX delayed-release tablets Treatment Duration Adults Healing of Erosive or Ulcerative Gastroesophageal Reflux Disease (GERD) 20 mg once daily 4 to 8 weeks* Maintenance of Healing of Erosive or Ulcerative GERD 20 mg once daily Controlled studies do not extend beyond 12 months Symptomatic GERD in Adults 20 mg once daily Up to 4 weeks** Healing of Duodenal Ulcers 20 mg once daily after the morning meal Up to 4 weeks*** Helicobacter pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence ACIPHEX 20 mg Amoxicillin 1000 mg Clarithromycin 500 mg Take all three medications twice daily with morning and evening meals; it is important that patients comply with the full 7-day regimen [see Clinical Studies (14.5) ] 7 days Pathological Hypersecretory Conditions, Including Zollinger-Ellison Syndrome Starting dose 60 mg once daily then adjust to patient needs; some patients require divided doses Dosages of 100 mg once daily and 60 mg twice daily have been administered As long as clinically indicated Some patients with Zollinger-Ellison syndrome have been treated continuously for up to one year Adolescents 12 Years of Age and Older Symptomatic GERD 20 mg once daily Up to 8 weeks * For those patients who have not healed after 8 weeks of treatment, an additional 8-week course of ACIPHEX may be considered. ** If symptoms do not resolve completely after 4 weeks, an additional course of treatment may be considered. *** Most patients heal within 4 weeks; some patients may require additional therapy to achieve healing. Administration Instruction s Swallow ACIPHEX delayed-release tablets whole. Do not chew, crush, or split tablets. For the treatment of duodenal ulcers take ACIPHEX delayed-release tablets after a meal. For Helicobacter pylori eradication take ACIPHEX delayed-release tablets with food. For all other indications ACIPHEX delayed-release tablets can be taken with or without food. Take a missed dose as soon as possible. If it is almost time for the next dose, skip the missed dose and go back to the normal schedule. Do not take two doses at the same time. Indication Recommended Dosage ( 2 ) Healing of Erosive or Ulcerative Gastroesophageal Reflux Disease (GERD) 20 mg once daily for 4 to 8 weeks Maintenance of Healing of Erosive or Ulcerative GERD* studied for 12 months 20 mg once daily* Symptomatic GERD in Adults 20 mg once daily for 4 weeks Healing of Duodenal Ulcers 20 mg once daily after morning meal for up to 4 weeks Helicobacter pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence Three Drug Regimen: ACIPHEX 20 mg Amoxicillin 1000 mg Clarithromycin 500 mg All three medications should be taken twice daily with morning and evening meals for 7 days Pathological Hypersecretory Conditions, Including Zollinger-Ellison Syndrome Starting dose 60 mg once daily then adjust to patient needs Symptomatic GERD in Adolescents 12 Years of Age and Older 20 mg once daily for up to 8 weeks Administration Instructions ( 2 ): Swallow ACIPHEX delayed-release tablets whole. Do not chew, crush or split the tablets. For the treatment of duodenal ulcers take ACIPHEX delayed-release tablets after a meal. For Helicobacter pylori eradication take ACIPHEX delayed-release tablets with food. For all other indications ACIPHEX delayed-release tablets can be taken with or without food.
Use in special populations
8 USE IN SPECIFIC POPULATIONS Pediatric Use: Dosage strength not appropriate for patients less than 12 years (2, 8.4). 8.1 Pregnancy Risk Summary There are no available human data on ACIPHEX use in pregnant women to inform the drug associated risk. The background risk of major birth defects and miscarriage for the indicated populations are unknown. However, the background risk in the U.S. general population of major birth defects is 2 to 4% and of miscarriage is 15 to 20% of clinically recognized pregnancies. No evidence of adverse developmental effects were seen in animal reproduction studies with rabeprazole administered during organogenesis at 13 and 8 times the human area under the plasma concentration-time curve (AUC) at the recommended dose for GERD, in rats and rabbits, respectively [ see Data ]. Changes in bone morphology were observed in offspring of rats treated with oral doses of a different PPI through most of pregnancy and lactation. When maternal administration was confined to gestation only, there were no effects on bone physeal morphology in the offspring at any age [see Data ]. Data Animal Data Embryo-fetal developmental studies have been performed in rats during organogenesis at intravenous doses of rabeprazole up to 50 mg/kg/day (plasma AUC of 11.8 µg•hr/mL, about 13 times the human exposure at the recommended oral dose for GERD) and rabbits at intravenous doses up to 30 mg/kg/day (plasma AUC of 7.3 µg•hr/mL, about 8 times the human exposure at the recommended oral dose for GERD) and have revealed no evidence of harm to the fetus due to rabeprazole. Administration of rabeprazole to rats in late gestation and during lactation at an oral dose of 400 mg/kg/day (about 195-times the human oral dose based on mg/m2) resulted in decreases in body weight gain of the pups. A pre- and postnatal developmental toxicity study in rats with additional endpoints to evaluate bone development was performed with a different PPI at about 3.4 to 57 times an oral human dose on a body surface area basis. Decreased femur length, width and thickness of cortical bone, decreased thickness of the tibial growth plate, and minimal to mild bone marrow hypocellularity were noted at doses of this PPI equal to or greater than 3.4 times an oral human dose on a body surface area basis. Physeal dysplasia in the femur was also observed in offspring after in utero and lactational exposure to the PPI at doses equal to or greater than 33.6 times an oral human dose on a body surface area basis. Effects on maternal bone were observed in pregnant and lactating rats in a pre- and postnatal toxicity study when the PPI was administered at oral doses of 3.4 to 57 times an oral human dose on a body surface area basis. When rats were dosed from gestational day 7 through weaning on postnatal day 21, a statistically significant decrease in maternal femur weight of up to 14% (as compared to placebo treatment) was observed at doses equal to or greater than 33.6 times an oral human dose on a body surface area basis. A follow-up developmental toxicity study in rats with further time points to evaluate pup bone development from postnatal day 2 to adulthood was performed with a different PPI at oral doses of 280 mg/kg/day (about 68 times an oral human dose on a body surface area basis) where drug administration was from either gestational day 7 or gestational day 16 until parturition. When maternal administration was confined to gestation only, there were no effects on bone physeal morphology in the offspring at any age. 8.2 Lactation Risk Summary Lactation studies have not been conducted to assess the presence of rabeprazole in human milk, the effects of rabeprazole on the breastfed infant, or the effects of rabeprazole on milk production. Rabeprazole is present in rat milk. The development and health benefits of breastfeeding should be considered along with the mother’s clinical need for ACIPHEX and any potential adverse effects on the breastfed infant from ACIPHEX or from the underlying maternal condition. 8.4 Pediatric Use The safety and effectiveness of ACIPHEX delayed-release tablets have been established in pediatric patients for adolescent patients 12 years of age and older for the treatment of symptomatic GERD. Use of ACIPHEX delayed-release tablets in this age group is supported by adequate and well controlled studies in adults and a multicenter, randomized, open-label, parallel-group study in 111 adolescent patients 12 to 16 years of age. Patients had a clinical diagnosis of symptomatic GERD, or suspected or endoscopically proven GERD and were randomized to either 10 mg or 20 mg once daily for up to 8 weeks for the evaluation of safety and efficacy. The adverse reaction profile in adolescent patients was similar to that of adults. The related reported adverse reactions that occurred in ≥2% of patients were headache (5%) and nausea (2%). There were no adverse reactions reported in these studies that were not previously observed in adults. The safety and effectiveness of ACIPHEX delayed-release tablets have not been established in pediatric patients for: Healing of Erosive or Ulcerative GERD Maintenance of Healing of Erosive or Ulcerative GERD Treatment of Symptomatic GERD Healing of Duodenal Ulcers Helicobacter pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence Treatment of Pathological Hypersecretory Conditions, Including Zollinger-Ellison Syndrome ACIPHEX delayed-release 20 mg tablets are not recommended for use in pediatric patients less than 12 years of age because the tablet strength exceeds the recommended dose for these patients [see Dosage and Administration (2) ]. For pediatric patients 1 year to less than 12 years of age consider another rabeprazole formulation. The safety and effectiveness of a different dosage form and dosage strength of rabeprazole has been established in pediatric patients 1 to 11 years for the treatment of GERD. Juvenile Animal Data Studies in juvenile and young adult rats and dogs were performed. In juvenile animal studies rabeprazole sodium was administered orally to rats for up to 5 weeks and to dogs for up to 13 weeks, each commencing on Day 7 post-partum and followed by a 13-week recovery period. Rats were dosed at 5, 25, or 150 mg/kg/day and dogs were dosed at 3, 10, or 30 mg/kg/day. The data from these studies were comparable to those reported for young adult animals. Pharmacologically mediated changes, including increased serum gastrin levels and stomach changes, were observed at all dose levels in both rats and dogs. These observations were reversible over the 13-week recovery periods. Although body weights and/or crown-rump lengths were minimally decreased during dosing, no effects on the development parameters were noted in either juvenile rats or dogs. When juvenile animals were treated for 28 days with a different PPI at doses equal to or greater than 34 times the daily oral human dose on a body surface area basis, overall growth was affected and treatment-related decreases in body weight (approximately 14%) and body weight gain, and decreases in femur weight and femur length were observed. 8.5 Geriatric Use Of the total number of subjects (n=2009) in clinical studies of ACIPHEX delayed-release tablets, 19% were 65 years and over, while 4% were 75 years and over. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. 8 . 6 Hepatic Impairment Administration of ACIPHEX delayed-release tablets to patients with mild to moderate hepatic impairment (Child-Pugh Class A and B, respectively) resulted in increased exposure and decreased elimination [see Clinical Pharmacology (12.3) ]. No dosage adjustment is necessary in patients with mild to moderate hepatic impairment. There is no information in patients with severe hepatic impairment (Child-Pugh Class C). Avoid use of ACIPHEX delayed-release tablets in patients with severe hepatic impairment; however, if treatment is necessary, monitor patients for adverse reactions [see Warnings and Precautions (5) , Adverse Reactions (6) ].

Interactions

7 DRUG INTERACTIONS Table 2 includes drugs with clinically important drug interactions and interaction with diagnostics when administered concomitantly with ACIPHEX delayed-release tablets and instructions for preventing or managing them. Consult the labeling of concomitantly used drugs to obtain further information about interactions with PPIs. Table 2: Clinically Relevant Interactions Affecting Drugs Co-Administered with ACIPHEX Delayed-Release Tablets and Interactions with Diagnostics Antiretrovirals Clinical Impact: The effect of PPI on antiretroviral drugs is variable. The clinical importance and the mechanisms behind these interactions are not always known. Decreased exposure of some antiretroviral drugs (e.g., rilpivirine, atazanavir, and nelfinavir) when used concomitantly with rabeprazole may reduce antiviral effect and promote the development of drug resistance. Increased exposure of other antiretroviral drugs (e.g., saquinavir) when used concomitantly with rabeprazole may increase toxicity. There are other antiretroviral drugs which do not result in clinically relevant interactions with rabeprazole. Intervention: Rilpivirine -containing products: Concomitant use with ACIPHEX delayed-release tablets is contraindicated [see Contraindications (4) ]. See prescribing information. Atazanavir: See prescribing information for atazanavir for dosing information. Nelfinavir: Avoid concomitant use with ACIPHEX delayed-release tablets. See prescribing information for nelfinavir. Saquinavir: See the prescribing information for saquinavir and monitor for potential saquinavir toxicities. Other antiretrovirals: See prescribing information. Warfarin Clinical Impact: Increased INR and prothrombin time in patients receiving PPIs, including rabeprazole, and warfarin concomitantly. Increases in INR and prothrombin time may lead to abnormal bleeding and even death [see Warnings and Precautions (5.2) ]. Intervention: Monitor INR and prothrombin time. Dose adjustment of warfarin may be needed to maintain target INR range. See prescribing information for warfarin. Methotrexate Clinical Impact: Concomitant use of rabeprazole with methotrexate (primarily at high dose) may elevate and prolong serum levels of methotrexate and/or its metabolite hydroxymethotrexate, possibly leading to methotrexate toxicities. No formal drug interaction studies of methotrexate with PPIs have been conducted [see Warnings and Precautions (5.9) ]. Intervention: A temporary withdrawal of ACIPHEX delayed-release tablets may be considered in some patients receiving high dose methotrexate administration. Digoxin Clinical Impact: Potential for increased exposure of digoxin [ see Clinical Pharmacology (12.3) ] . Intervention: Monitor digoxin concentrations. Dose adjustment of digoxin may be needed to maintain therapeutic drug concentrations. See prescribing information for digoxin. Drugs Dependent on Gastric pH for Absorption (e.g., ir on salts, erlotinib, dasatinib, nilotinib, mycophenol ate mofetil, ketoconazole , itraconazole ) Clinical Impact: Rabeprazole can reduce the absorption of other drugs due to its effect on reducing intragastric acidity. Intervention: Mycophenolate mofetil (MMF): Co-administration of PPIs in healthy subjects and in transplant patients receiving MMF has been reported to reduce the exposure to the active metabolite, mycophenolic acid (MPA), possibly due to a decrease in MMF solubility at an increased gastric pH. The clinical relevance of reduced MPA exposure on organ rejection has not been established in transplant patients receiving ACIPHEX delayed-release tablets and MMF. Use ACIPHEX delayed-release tablets with caution in transplant patients receiving MMF. See the prescribing information for other drugs dependent on gastric pH for absorption. Combination Therapy with Clarithromycin and Amoxicillin Clinical Impact: Concomitant administration of clarithromycin with other drugs can lead to serious adverse reactions, including potentially fatal arrhythmias, and are contraindicated. Amoxicillin also has drug interactions. Intervention: See Contraindications and Warnings and Precautions in prescribing information for clarithromycin. See Drug Interactions in prescribing information for amoxicillin. Tacrolimus Clinical Impact: Potentially increased exposure of tacrolimus, especially in transplant patients who are intermediate or poor metabolizers of CYP2C19. Intervention: Monitor tacrolimus whole blood trough concentrations. Dose adjustment of tacrolimus may be needed to maintain therapeutic drug concentrations. See prescribing information for tacrolimus. Interactions with Investigations of Neuroendocrine Tumors Clinical Impact : Serum chromogranin A (CgA) levels increase secondary to PPI-induced decreases in gastric acidity. The increased CgA level may cause false positive results in diagnostic investigations for neuroendocrine tumors. Intervention: Temporarily stop ACIPHEX delayed-release tablets treatment at least 14 days 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. Interaction with Secretin Stimulation Test Clinical Impact: Hyper-response in gastrin secretion in response to secretin stimulation test, falsely suggesting gastrinoma. Intervention: Temporarily stop treatment with ACIPHEX delayed-release tablets at least 14 days before assessing to allow gastrin levels to return to baseline. False Positive Urine Tests for THC Clinical Impact: There have been reports of false positive urine screening tests for tetrahydrocannabinol (THC) in patients receiving PPIs. Intervention: An alternative confirmatory method should be considered to verify positive results. See full prescribing information for a list of clinically important drug interactions (7).

More information

Category Value
Authorisation number NDA020973
Agency product number 3L36P16U4R
Orphan designation No
Product NDC 62856-243
Date Last Revised 25-06-2018
Type HUMAN PRESCRIPTION DRUG
RXCUI 854868
Marketing authorisation holder Eisai Inc.