ANTIPARKINSONIAN DRUGS

1. DRUGS AFFECTING BRAIN DOPAMINERGIC SYSTEM
    a. Dopamine precursor :
                Levodopa

    b. Peripheral decarboxylase inhibitors:
                Carbidopa
                Benserazide

    c. Dopaminergic agonists:
                Bromocriptine
                Ropinirole
                Pramipexole

    d. MAO-B inhibitor:
                Selegiline

    e. COMT inhibitors:
                Entacapone
                Tolcapone

    f. Glutamate(NMDA) agonist (Dopamine facilitator):
                Amantadine


2. DRUGS AFFECTING BRAIN CHOLINERGIC SYSTEM
    a. Central anticholinergics:
                Trihexyphenidyl (Benzhexol)
                Procyclidine
                Biperiden

    b. Antihistaminics:
                Orphenadrine
                Promethazine