Abstract
Optimum treatment responses in patients with Parkinson's disease are typically achieved through drug interactions that aim at increasing levodopa availability, targeting the drug to the brain, while smoothing its concentrationtime profile. Inhibitors of amino acid decarboxylase, catechol-O-methyltransferase, and monoamine oxidases are all used for that purpose but to assure maximum levodopa effectiveness and safety, doses and timing of these drugs with respect to comedication have to be individualised. Moreover, a number of frequently used drugs to treat comorbidity have a potential to modify levodopa pharmacokinetics and particularly bioavailability. These drugs may trigger avoidable fluctuations of motor function in these patients if not handled appropriately. Other combinations should be avoided because they are associated with unacceptable risks.
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Haefeli, W.E. Drug-drug interactions with levodopa modulating treatment responses in Parkinson's disease. J Neurol 254 (Suppl 4), IV29–IV36 (2007). https://doi.org/10.1007/s00415-007-4006-x
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DOI: https://doi.org/10.1007/s00415-007-4006-x