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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Cost considerations of medical therapy for glaucoma.

PURPOSE: To determine the calculated daily patient cost (cost minimization) of medical glaucoma therapy. METHODS: The actual volume of various glaucoma medications was determined for all commercially available sizes of the tested products. The drops per ml on the basis of the actual volume and the daily costs of the dosage schedules recommended by the manufacturers were compared. The cost of each bottle of medication was determined from the average wholesale price in the United States. RESULTS: The generic timolol products dosed twice daily and the once-daily gel-forming solutions (range, $0.30 to $0.46/day) were similar on a cost-per-day basis compared with the brand name metipranolol (Optipranolol; Bausch & Lomb Pharmaceuticals, Tampa, Florida, at $0.43/day) and timolol (Timoptic; Merck, West Point, Pennsylvania, at $0.46/day and Timoptic XE at $0.38/ day). Betaxolol (Betoptic S; Alcon Laboratories, Fort Worth, Texas, at $0.65/day), carteolol (Ocupress; CibaVision, Duluth, Georgia, at $0.57/day), levobunolol ($0.61/day), and brand name levobunolol (Betagan; Allergan, Irvine, California, at $0.81/day) all were dosed twice daily and were more costly on a per-day basis. The topical carbonic anhydrase inhibitors brinzolamide (Azopt; Alcon, at $0.96/day) and dorzolamide (Trusopt; Merck, at $1.02/day) were dosed three times daily and were similar on a cost-per-day basis. The combination product Cosopt (timolol 0.5% + dorzolamide 2.0%, Merck, at $1.12/day) was less costly than separate bottles of a topical carbonic anhydrase inhibitor (three times daily dosing) and a beta-blocker ($1.26 to $1.83/day), often even if the topical carbonic anhydrase inhibitor was dosed two times daily ($0.94 to $1.49). The selective alpha2-agonist brimonidine (Alphagan; Allergan, at $0.90/day) twice daily and the prostaglandin analog latanoprost (Xalatan; Pharmacia & Upjohn, Kalamazoo, Michigan, at $0.92/day) once daily were similarly priced. CONCLUSIONS: All generic timolol, Optipranolol, Timoptic, and Timoptic XE ranged between $0.30 and $0.46 per day. Betaxolol, Ocupress, generic levobunolol, and Betagan were more costly, ranging between $0.57 and $0.81 per day. Cosopt ($1.12/day) was less costly than separate bottles of a topical beta-blocker and a topical carbonic anhydrase inhibitor dosed three times daily ($1.26 to $1.83/day) and often twice daily ($0.94 to $1.49). Alphagan and Xalatan were similarly priced ($0.90/day and $0.92/day, respectively). This study is based on a best-case scenario for all medicines and does not account for wasted doses, the frequency of refills, or a medication's success or failure rate. New adjunctive glaucoma regimens exhibit similar costs per day compared with more traditional regimens.[1]

References

  1. Cost considerations of medical therapy for glaucoma. Fiscella, R.G., Geller, J.L., Gryz, L.L., Wilensky, J., Viana, M. Am. J. Ophthalmol. (1999) [Pubmed]
 
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