EPLERENONE PACKAGE INSERT PDF

Prospective postmarketing surveillance of Selara eplerenone , a selective mineralocorticoid receptor antagonist, was performed to confirm its safety and efficacy for hypertension treatment in Japan. The change in blood pressure after initiation of eplerenone treatment was also examined. For examination of changes in blood pressure, patients were excluded if eplerenone was contraindicated or used off-label. No treatments including antihypertensive drugs were restricted during the surveillance period. Across Japan, 3, patients were included for safety analysis. The incidence of adverse drug reactions was 2.

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Eplerenone, a mineralocorticoid receptor antagonist MRA , is available in Japan, but details of its use in clinical settings have not been thoroughly investigated.

Data of , hypertensive patients who used the same drugs for six months or more were collected from an insurance database from January 1, , to December 31, Compared to patients on eplerenone or spironolactone, patients on neither drug had fewer comorbidities.

Eplerenone was administered in combination with calcium channel blockers and angiotensin II receptor blockers in Drug treatment options for arterial hypertension have increased and some of them have organ-protective effects [ 1 — 3 ]. Mineralocorticoid receptor antagonists MRAs are one such class of drugs. Eplerenone has been indicated for the treatment of hypertension in Japan since and has more recently been indicated for heart failure in However, the data on eplerenone are often combined with those on spironolactone, an older MRA.

Thus, currently, the use of eplerenone itself is not fully delineated. Recently, the results of postmarketing surveillance of eplerenone in Japan were published [ 4 ]; the surveillance provided information on the safety and efficacy of the drug in real-world settings.

Nonetheless, it did not provide detailed information on different dosages as related to patient backgrounds such as the presence of concomitant diseases including heart failure or renal disease.

Information about antihypertensive drug use including that of MRAs, especially eplerenone, would serve as a useful reference for Japanese physicians as well as those in other countries to understand how these drugs are currently used and how their use should be improved.

Therefore, in this study, using a nation-wide, multi-institutional database for reimbursement claims of medical costs, the detailed use of eplerenone in Japanese hypertensive patients was investigated. The objectives of this study were to 1 investigate the characteristics of hypertensive patients prescribed eplerenone or spironolactone and compare them against those of patients who did not use either drug, 2 describe the combination patterns of antihypertensive medications among patients prescribed eplerenone, spironolactone, or neither drug, and 3 compare mean doses of eplerenone with respect to concomitant diseases cardiovascular diseases, diabetes mellitus, heart failure, and renal dysfunction.

This was a retrospective, noninterventional cross-sectional study using patient data registered in an electronic database of corporate insurance claims developed by MinaCare Co. The details of the MinaCare database have been described by Shima et al. The database used is a subject-level database that protects the identity of individuals. MinaCare is allowed to use such anonymized data under the data transfer contract with its client health insurers. The MinaCare database is suitable for this study to investigate the real- world use of antihypertensive medications owing to its large size.

It includes regularly updated data of health checkups as well as medical and pharmaceutical claims. The population covered by the database includes workers and their family members in a wide range of age groups below the age of 75 years. Employment-based health insurance covers a variety of industries across the nation but workers in primary industries, such as agriculture, fisheries, and forestry, and self-employed individuals are not included.

As of April , the MinaCare database included medical and pharmaceutical claims of approximately 4. The study inclusion criteria were as follows: 1 patients with arterial hypertension identified using the ICD code and disease name replacement code Supplemental Table 1 and prescribed antihypertensive drugs Supplemental Tables 2 and 3 in at least one claim record month from January 1, , to December 31, ; and 2 males and females aged 20 years or more in the first claim record month as that referred to in 1.

There are no exclusion criteria for this study. All types of data excluding those pertaining to medical procedures were extracted. The sample size was determined by the number of subjects who met the selection criteria in the database during the study period. Stable drug treatment was defined as six or more months of treatment with the same drug or the same combination of drugs.

Since the dose was not considered, treatment was considered stable even if the dose had been changed. The eplerenone dose considered was that taken in the last month of a six-month phase during the stable drug treatment period.

The coding used in the database is listed in Supplemental Tables. The primary definitions of diseases were determined using ICD codes and secondary definitions were used in sensitivity analyses Supplemental Table 1. Primary definitions were set to identify all patients considered to have the diseases of interest and secondary definitions were used to refine the search further and identify the desired patients with more certainty. For example, the primary definition of arterial hypertension consisted of 38 ICD codes or disease name replacement codes and the secondary definition consisted of Sensitivity analyses regarding disease category definition were planned.

The analysis was based on descriptive statistical methods. No formal statistical inference was used. From each subject, data beginning at 1 month from the first recorded date index date were considered in the analysis. In the case of compound drugs, each constituent drug was counted if the drug classes are different, and patients who received compound drugs were counted as many times as the number of constituent drugs of different classes in the tablet.

Records from the last month of the stable drug treatment period were used in the following three comparisons: 1 comparison of the backgrounds among hypertensive patients prescribed eplerenone, spironolactone, or neither drug, 2 comparison of concomitant medications antihypertensive drug class and number among hypertensive patients prescribed eplerenone, spironolactone, or neither drug, and 3 comparison of eplerenone dosage mean dose with respect to different comorbidities.

No explicit imputation method was used to address the missing values. The number of patients with stable treatment using antihypertensive drugs was , Since the number of patients who met the primary definition but not the secondary definition was small, 0. The percentage of female patients was The percentages of male and female patients were almost equal in the overall population [ 5 ].

The percentages of female patients and the mean ages of patients receiving eplerenone, spironolactone, and neither drug but other antihypertensive drugs are listed in Table 1. Four patients were prescribed both eplerenone and spironolactone. The number of patients receiving an MRA eplerenone or spironolactone was 3, 2. Of these, 0. The most frequent comorbidity among all patients was diabetes Compared to patients on stable treatment with eplerenone or spironolactone, patients who received neither drug had a lower percentage of comorbidities including cardiovascular disease, diabetes, or heart failure.

In particular, the prevalence of heart failure 7. Among the patients on eplerenone, the numbers of patients categorized with primary and secondary definitions of comorbidities were similar in the sensitivity analyses, except in the case of renal disease.

In contrast, renal disease was identified in patients Since the number of patients identified using the secondary definition was quite small, the comparison of the results achieved using primary and secondary definitions was considered unreliable and not performed. Among patients who were on stable antihypertensive treatment, the majority were treated by monotherapy Further, in the same population, the most frequent combination of antihypertensive drugs was dual therapy with a calcium channel blocker CCB and an angiotensin II receptor blocker ARB Among patients on stable treatment with eplerenone, the most common treatment was triple therapy The most frequent combination treatments involving eplerenone were triple therapy with a CCB, an ARB, and eplerenone The percentage of each of the other combinations was less than 7.

Similarly, for spironolactone, the most frequent combination treatments were triple therapy Among patients on eplerenone, 80 6. As for spironolactone, 9. The percentage of patients receiving MRA monotherapy was very small; the baseline characteristics of these patients were examined. The comorbidities in patients on eplerenone monotherapy were as follows: cardiovascular disease Patients on spironolactone monotherapy showed a similar distribution of comorbidities. Among these patients, the most frequent comorbidity was cardiovascular disease This study investigated the usage trends of eplerenone in Japan.

It showed that the combined use of MRAs, eplerenone and spironolactone, was approximately 2. Despite studies having shown the efficacy and safety of eplerenone even in high-risk hypertensive patients with albuminuria, eplerenone is not widely used relative to other antihypertensive drugs [ 7 , 8 ]. Use of eplerenone is allowed in hypertensive patients with either diabetes or microalbuminuria; however, it is contraindicated for hypertensive patients with type 2 diabetes with microalbuminuria.

This may be one reason that the usage of eplerenone is limited despite the organ- and blood vessel-protective effects [ 1 — 3 ]. It is speculated that MRAs are used as a last resort to control blood pressure. The prevalence of treatment-resistant hypertension has been reported to be 6.

The majority of the patients with treatment-resistant hypertension appear not to be treated with an MRA and there seem to be scope for the use of MRAs in those patients. A comparison of patients on MRA with those on other antihypertensive drugs showed that prevalence of the comorbidities such as cardiovascular disease, diabetes, and heart failure was high in patients on MRA.

The difference in the prevalence of heart failure was particularly high, with the prevalence being This suggested that when an MRA is used, it was likely to be chosen when patients had a comorbidity especially heart failure. Among the MRAs used, higher prevalence of comorbid heart failure was reported in patients using spironolactone compared to eplerenone.

The reason for this preference could not be explored in this study, but it might be because spironolactone is indicated for edematous conditions in patients with congestive heart failure whereas eplerenone did not have an indication for heart failure at the time when this study data were recorded in Japan.

In addition, spironolactone has been available for more than 50 years in Japan and health care providers are used to prescribing it, although more adverse effects are expected with spironolactone due to the difference in selectivity for mineralocorticoid receptors and androgen or progesterone receptors [ 11 ]. These two classes were used as baseline drugs for the treatment of hypertension. When a triple therapy was chosen, another class was often added to the therapy.

MRAs were used in a similar way. The comorbidities in patients on spironolactone monotherapy were similar to those in patients on eplerenone. Although treatment-resistant hypertension was not investigated in this study, comorbid cardiovascular disease was significantly associated with treatment-resistant hypertension [ 12 ], which was probably treated using an MRA. The postmarketing surveillance PMS of eplerenone in Japan was conducted from May to April ; it revealed that among patients on eplerenone, The mean age of patients on eplerenone in the PMS standard deviation was Since the subjects in the PMS were older, it might be possible that they were more likely to be on monotherapy to avoid hypotension due to multiple drugs.

The possible selection bias that could have occurred on both the physician and patient sides should be considered during analysis and interpretation to derive optimal benefit from approaches taken in PMS [ 13 ]. However, at the time of data collection, eplerenone was only indicated for the treatment of hypertension. Using claims data to investigate issues is subject to several limitations that may affect the validity and reproducibility of results. The MinaCare database includes data of corporate employees and their dependents covered by its employment-based health insurance.

Due to the Japanese insurance system, whereby people aged 75 years and more have to change their insurance to elderly care insurance, the database does not include this age group selection bias. This may limit the generalizability of the study. In this study, we defined diseases based on ICD diagnostic codes. However, coding may not be accurately recorded, the diagnosis may be missed in some cases, and different professionals may have different coding patterns, which may affect the results of the study.

Regardless, the database is useful and provides the best available data to investigate the actual conditions of diagnosis and treatment of hypertension.

Since the number of patients identified using the secondary definition of renal disease was quite small, comparison of the results achieved using primary and secondary definitions was not performed.

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Database Analysis of Eplerenone Use in Japanese Hypertensive Patients in Clinical Practice

Send the page " " to a friend, relative, colleague or yourself. We do not record any personal information entered above. Selective aldosterone receptor antagonist SARA Used to treat hypertension; also used to treat heart failure in post-myocardial infarction patients Metabolized by CYP3A4; associated with a risk of hyperkalemia. For inadequate blood pressure response after 4 weeks of treatment, may increase dosage to 50 mg PO twice daily. Coadministration of certain drugs may need to be avoided or dosage adjustments may be necessary; review drug interactions. Initially, 25 mg PO once daily. Increase dosage to 50 mg PO once daily as tolerated within 4 weeks.

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Medically reviewed by Drugs. Last updated on Aug 1, Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular CV events, primarily strokes and MI. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes.

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