ABSTRACT: to quantify the extent of counterfeit sildenafl in Indonesia. Methods: the study was conducted in 4 big areas: Jakarta, Bandung, East Java (Surabaya and Malang), and Medan. Sildenafl 100 mg tablets were purchased from pharmacies, drugstores, street peddlers, and 3 Indonesian websites. The outlets were chosen by random sampling in each stratum (type of outlet). Sildenafl tablets purchased were sent to Pfzer Quality Operations Division, Dalian, China, for authenticity evaluations (by infra red spectral analysis). All counterfeit tablets were then sent to Pfzer Counterfeit Medicines Laboratory, Sandwich, UK, a portion of which were analyzed quantitatively for sildenafl concentration per tablet (by HPLC). Results: a total of 518 sildenafl 100 mg tablets were collected and sent to Dalian. Of these tablets, 284 tablets (55%) were genuine sildenafl and 234 tablets (45%) were counterfeit sildenafl. Counterfeit sildenafl were mostly found in street peddlers (100%), in drugstores (56%), and from internet (33%), but pharmacies also had (13%) counterfeit sildenafl. The sildenafl content of 106 counterfeit tablets analyzed varied from 24 to 157 mg per 100 mg tablet. No analysis was done to determine other active ingredient. Conclusion: 45% sildenafl 100 mg tablets in Indonesia were found counterfeit and widely distributed in street peddlers, drugstores, and pharmacies. This report is aimed to alert the potential consumers, health professionals and regulators of this problem.
Author: Akmal Taher, Arini Setiawati
Journal Code: jpkedokterangg130273