The present disclosure provides a method for the treatment of Parkinson's
disease comprising simultaneously or sequentially administering to a patient in need of treatment of Parkinson's
disease a
dosage form comprising(i)
levodopa in an amount
ranging from 50 mg to 300 mg,(ii)
carbidopa in an amount
ranging from 25 mg to 150 mg or a therapeutically equivalent amount of another aromatic
amino acid decarboxylase inhibitor, and(iii)
entacapone in an amount
ranging from 50 mg to 300 mg, wherein the proportion of
entacapone to
carbidopa in said
dosage form ranges from 0.3:1.0 to 3.2:1.0 by weight, a moderately potent
COMT inhibitor in an amount ranging from 25 mg to 200 mg, wherein the proportion of said
COMT inhibitor to
carbidopa in said
dosage form ranges from 0.16:1.0 to 3.08:1.0 by weight, or a highly potent
COMT inhibitor in an amount ranging from 1 mg to 100 mg, wherein the proportion of said COMT inhibitor to carbidopa in said dosage form ranges from 0.006:1.0 to 1.54:1.0 by weight. Pharmaceutical dosage form used in said method are also disclosed.