Improving Compliance and Persistence with Bisphosphonate Therapy for Osteoporosis

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Abstract

The successful treatment of patients at increased risk for fracture requires proper diagnosis and the development of a treatment plan that permits the patient to take medications in accordance with dosing guidelines and on the correct schedule. Data indicate that patients with osteoporosis who have good long-term medication compliance experience substantially lower risk of fracture. Persistence with therapy also correlates with better bone mineral density and improved suppression of bone turnover markers. Although bisphosphonates are the most potent currently approved antiresorptive agents, they have special dosing issues that can have a negative impact on long-term persistence. The inconvenience and complexity of some dosing requirements; the potential for adverse effects, especially when dosing recommendations are not followed; and very low absorption rates—even under ideal conditions—all contribute to poor outcomes. Extension of the dosing interval from a once-daily to a once-weekly regimen is associated with comparable efficacy, theoretically may improve gastrointestinal safety, and is associated with substantial improvement in persistence with therapy. However, compliance with weekly regimens remains suboptimal. Monthly dosing of ibandronate, a bisphosphonate, was recently approved by the US Food and Drug Administration (FDA). Although extending the dosing interval may improve compliance and persistence with bisphosphonate therapy, it is important to recognize that missed doses or improper dosing may have greater consequences with extended dosing intervals. This article highlights the importance of educating patients about their diagnosis and long-term treatment plan, including the importance of persistence with therapy and compliance with dosing recommendations.

Section snippets

Current state of diagnosis and treatment of osteoporosis

A retrospective study conducted by Gehlbach and colleagues1 illustrates the failure to recognize and treat patients with fracture (Figure 1A). In this study, vertebral fractures in the thoracic region were retrospectively identified by radiologists and compared with diagnoses made at the time of hospitalization. Moderate or severe vertebral fractures were found in 132 (14.1%) women aged ≥60 years who were hospitalized for any reason. In these patients, only 50% of radiology reports and 17% of

Current state of compliance and persistence with osteoporosis therapy

The data summarized above clearly indicate a large gap between the need and the initial prescription for osteoporosis treatment. A second hurdle that must be overcome in the treatment of osteoporosis is ensuring that patients who receive therapy take their medications on schedule and remain on therapy as long as needed. Good compliance and persistence are essential to ensure the best long-term pharmacotherapy results.

Accurate real-world data about compliance and persistence with medications—for

Impact of compliance and persistence on osteoporosis treatment outcomes

A 2-year study conducted using healthcare database information on 11,249 women with osteoporosis found that those who took ≥80% of their prescribed medication doses had a 16% lower risk of fracture compared with less long-term compliant patients.13 Another recent study showed that patients who took ≥80% of their osteoporosis medications had 26% reduction in fractures compared with other patients with lower long-term compliance.14

Moreover, persistence with bisphosphonate therapy has been

Influences on long-term persistence with osteoporosis therapy

Many issues may impact long-term persistence with osteoporosis medication, including cost and availability, real or perceived adverse effects, dosing frequency and convenience, the number of concomitant diseases and medications, and patients’ understanding of their test results and need for therapy.

Cost and ready availability of medication are critical factors in ensuring compliance. As a direct result of cost, patients frequently do not have their prescriptions dispensed, take a lower dose of

Compliance and persistence with bisphosphonates: Key issues

Although bisphosphonates are the most potent antiresorptive agents currently available, they have special requirements that may negatively impact long-term persistence. Bisphosphonates must be taken according to strict treatment guidelines to achieve optimum absorption and minimize the risk of adverse gastrointestinal events. Patients must avoid food or drink for ≥30 to 60 minutes before taking the medication and the dose must be accompanied by water. Patients are then required to remain

Summary

The relatively low rate of patient compliance and persistence with osteoporosis therapy means that only a small percentage of patients are receiving adequate therapy. The ready availability of tools to assess BMD permits the identification of women with osteoporosis well before they experience the consequences of this disease. Implementing osteoporosis prevention strategies—lifestyle modification, dietary changes, and pharmacologic treatment—should reduce fracture-related morbidity and

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