<prompt> Antiviral drug amantadine is approved for:AchizophreniaDepressionAlzheimers diseaseParkinsonism  <response>: Ref: Katzung, 14th ed. pg. 501 Amantadine is an antiviral for Influenza A. It has been approved for treatment for Parkinson disease as well. Best for early stage PD or if patient not responding to L-Dopa Mechanism of action Facilitate DA release from presynaptic dopaminergic neuron and also Prevents DA uptake Side effect: Confusion, Hallucination, Ankle edema, Livido reticularis 