<qa>  How many healthy volunteers receive one tablet of an association of levodopa 200 mgA group of 24 healthy volunteers receive one tablet of an association of levodopa 200 mg and benserazide 50 mg corresponding to two drug products: a test formulation Evoser ; Phoenix S.A.I.C. y F., Buenos Aires, Argentina and a reference formulation Madopar ; Roche Pharma, Switzerland to assess their relative bioavailability. After administration of each formulation 17 blood samples are taken and levodopa is measured by HPLC. Pharmacokinetic parameters AUC, Tmax and Cmax are compared. 