I Have Begun To Take 100 Mg Of Amantadine For

I have begun to take 100 mg of Amantadine for Parkinsons. Rytary (4 caps 3X/day) is my major medicine. The Amantadine is supposed to prevent respiratory diskinesia, which I've been experiencing periodically over the past two years. My current symptoms, attributable to Amantadine I believe, are gait problems, diskinesia, and balance problems. Should I discontinue the Amantadine?