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  • Title: Does combined levodopa and bromocriptine therapy in Parkinson's disease prevent late motor complications?
    Author: Alarcon F, Cevallos N, Lees AJ.
    Journal: Eur J Neurol; 1998 May; 5(3):255-263. PubMed ID: 10210840.
    Abstract:
    Levodopa-carbidopa (LD) in low dosages adequately controls symptoms in most patients with Parkinson's disease and delays the appearance of fluctuations and dyskinesias. It has been suggested that early combination therapy with bromocriptine and levodopa delays or prevents the onset of late treatment complication associated with LD monotherapy in Parkinson's disease. We have conducted this study to assess the possible benefit of combined therapy compared with levodopa monotherapy. Seventy-eight previously untreated patients with Parkinson's disease were recruited over a period of 54 months and randomly allocated to either a levodopa-carbidopa (LD) Group or a levodopa-carbidopa in combination with low-dose bromocriptine (LD-Br) Group. The appearance of motor complications determined the end point of the study. We gradually increased the doses of bromocriptine (2.5-15 mg/d) or levodopa (125-500 mg/d) until the maximum "on" time was reached. In six patients, the doses of levodopa had to be increased up to the optimal dose (625-1000 mg/day). In the last evaluation the on-time and parkinsonian disability were similar in both treatment groups. We did not find statistically significant differences in the frequency of motor complications when comparing the two groups of treatment. Our study suggests that early combination of levodopa and bromocriptine does not confer any clinical benefit over levodopa alone in treating early Parkinson's disease, nor will it influence the evolution of the disease.Copyright Lippincott-Raven Publishers
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