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Rwagitinywa J, Lapeyre-Mestre M, Bourrel R, Montastruc JL, Sommet A. Comparison of adherence to generic multi-tablet regimens vs. brand multi-tablet and brand single-tablet regimens likely to incorporate generic antiretroviral drugs by breaking or not fixed-dose combinations in HIV-infected patients. Fundam Clin Pharmacol 2018; 32:450-458. [PMID: 29505661 DOI: 10.1111/fcp.12363] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 01/27/2018] [Accepted: 02/27/2018] [Indexed: 12/01/2022]
Abstract
Adherence to antiretroviral (ARV) is crucial to achieve viral load suppression in HIV-infected patients. This study aimed to compare adherence to generic multi-tablet regimens (MTR) vs. brand MTR likely to incorporate ARV drugs without breaking fixed-dose combinations (FDC) and brand single-tablet regimens (STR) likely to incorporate generics by breaking the FDC. Patients aged of 18 years or over exposed to one of the generic or the brand of lamivudine (3TC), zidovudine/lamivudine (AZT/TC), nevirapine (NVP), or efavirenz (EFV), or the brand STR of efavirenz/emtricitabine/tenofovir (EFV/FTC/TDF). Adherence was measured by medication possession ratio (MPR) using both defined daily dose (DDD) and daily number of tablet recommended for adults (DNT). Adherence to generic MTR vs. brand MTR and brand STR was compared using Kruskal-Wallis. The overall median adherence was 0.97 (IQR 0.13) by DNT method and 0.97 (0.14) by DDD method. Adherence in patients exposed to generic MTR (n = 165) vs. brand MTR (n = 481) and brand STR (n = 470) was comparable by DNT and DDD methods. In conclusion, adherence to generic MTR was high and comparable with adherence to brand MTR and to STR. Utilization of DDD instead DNT to measure the MPR led to small but nonsignificant difference that has no clinical impact.
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Affiliation(s)
- Joseph Rwagitinywa
- Medical and Clinical Pharmacology Unit, Toulouse University Hospital, 37 Allées Jules Guesde, 31000, Toulouse, France.,UMR NSERM 1027, University Toulouse III, 37 Allées Jules Guesde, 31000, Toulouse, France
| | - Maryse Lapeyre-Mestre
- Medical and Clinical Pharmacology Unit, Toulouse University Hospital, 37 Allées Jules Guesde, 31000, Toulouse, France.,UMR NSERM 1027, University Toulouse III, 37 Allées Jules Guesde, 31000, Toulouse, France.,CIC 1436, Toulouse University Hospital, Place du Docteur Baylac - TSA 40031, 31059, Toulouse Cedex 9, France
| | - Robert Bourrel
- Caisse Nationale d'Assurance Maladie des Travailleurs Salariés (CNAMTS), Direction de l'échelon médical, 3 Boulevard Léopold Escande, 31000, Toulouse, France
| | - Jean-Louis Montastruc
- Medical and Clinical Pharmacology Unit, Toulouse University Hospital, 37 Allées Jules Guesde, 31000, Toulouse, France.,UMR NSERM 1027, University Toulouse III, 37 Allées Jules Guesde, 31000, Toulouse, France.,CIC 1436, Toulouse University Hospital, Place du Docteur Baylac - TSA 40031, 31059, Toulouse Cedex 9, France
| | - Agnès Sommet
- Medical and Clinical Pharmacology Unit, Toulouse University Hospital, 37 Allées Jules Guesde, 31000, Toulouse, France.,UMR NSERM 1027, University Toulouse III, 37 Allées Jules Guesde, 31000, Toulouse, France.,CIC 1436, Toulouse University Hospital, Place du Docteur Baylac - TSA 40031, 31059, Toulouse Cedex 9, France
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