A double-blind randomized controlled trial of low doses of propranolol, nortriptyline, and the combination of propranolol and nortriptyline for the preventive treatment of migraine Estudo controlado, randomizado e duplo cego do uso de baixas doses de propranolol, nortriptilina e a combinação destas duas drogas no tratamento preventivo da migrânea

Few trials have evaluated combination of two or more drugs in the preventive treatment of migraine. In this study three therapeutic regimens were compared: (a) propranolol, at a dose of 40 mg per day, (b) nortriptyline, at a dose of 20 mg per day, and (c) the combination of these two drugs in these...

Full description

Bibliographic Details
Main Authors: Renan B. Domingues, André L. Pirajá da Silva, Simone A. Domingues, Camila Catherine H. Aquino, Gustavo W. Kuster
Format: Article
Language:English
Published: Academia Brasileira de Neurologia (ABNEURO) 2009-12-01
Series:Arquivos de Neuro-Psiquiatria
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2009000600002
Description
Summary:Few trials have evaluated combination of two or more drugs in the preventive treatment of migraine. In this study three therapeutic regimens were compared: (a) propranolol, at a dose of 40 mg per day, (b) nortriptyline, at a dose of 20 mg per day, and (c) the combination of these two drugs in these dosages. The groups were matched according to age, gender, and frequency of migraine attacks prior to treatment. The period of treatment was two months and the frequency and intensity of headache attacks of the 30 days pre-treatment period were compared with the frequency of headaches in the treatment period. Fourteen patients in groups A and B and sixteen patients in group C have completed the study. Treatment with propranolol, alone or in combination, was shown to be effective. Treatment with nortriptyline alone was not effective. All three therapeutic regimens were safe and side effects were minimal. The frequency of discontinuation of the study was the same in the 3 groups but no patient left the study due to adverse reactions. The combined therapy proved to be as safe as the monotherapy. Further studies evaluating this and other possible combinations of drugs in higher doses and for longer periods, should more clearly elucidate the role of combined therapy in the treatment of migraine.<br>Poucos ensaios clínicos têm avaliado o tratamento preventivo da migrânea através da combinação de drogas. Neste estudo, três regimes terapêuticos foram comparados: (a) popranolol, na dose de 40 mg por dia, (b) nortriptilina, na dose de 20 mg por dia e (c) combinação destas duas drogas nestas dosagens. Os grupos foram pareados de acordo com idade, sexo e freqüência de crises previamente ao tratamento. O período de tratamento foi de dois meses e a frequência e a intensidade das crises de cefaléia do período pré-tratamento foram comparadas com as do período de tratamento. Concluíram o estudo 14 pacientes do grupo A, 14 do grupo B e 16 do grupo C. Os tratamentos com propranolol, isolado ou em associação mostraram-se eficazes. O tratamento com nortriptilina isolada não se mostrou eficaz para a redução do número de dias com cefaléia. Todos os três regimes terapêuticos foram seguros e os efeitos colaterais foram mínimos. A freqüência de abandono do estudo foi a mesma nos 3 grupos e nenhum paciente abandonou o estudo devido a reações adversas. A terapia combinada mostrou-se tão segura quanto a monoterapia. Estudos futuros avaliando esta e outras possíveis combinações de drogas, em doses maiores e por períodos mais longos, deverão elucidar mais claramente o papel da terapia combinada no tratamento da migrânea.
ISSN:0004-282X
1678-4227