[Alendronate and vitamin D (Fosavance): persistence, adherence and importance of vitamin D].

Persistence and adherence are major determinants of optimal results in the treatment of osteoporosis. In order to improve the efficacy of antiresorptive drugs, fewer demands on patients and better adherence were obtained with less frequent dosing schedule. Once-weekly and once-monthly oral bisphophonates showed equivalency with once daily medications. Comparison of persistence and adherence between weekly and monthly bisphosphonate regimens revealed conflicting results. In Croatia, persistence and adherence of weekly alendronate seem to be better than in other countries. In the light of compliance problems there is a need to assure adequate intake of vitamin D, because it is essential for prevention and treatment of osteoporosis and osteoporotic fractures. Vitamin D has other beneficial effects, particularly on neuromuscular performances. A high prevalence of vitamin D inadequacy was seen across all geographic regions. Weekly alendronate and vitamin D in one tablet provides proven fracture prevention at the spine and hip, and assure that patients receive a weekly dose of vitamin D.