Hi Kristin, I have 66 (2 yrs, diagnosed), and have symptons similars to your father, I took innitially a drug similar to Eldprenyl ? (seligiline) with little effect and one year latter it was added levedopa(Sinemed ?). The tremor reduced neverthless I reduced to take only a diminute amount of it (100 mg og levodopa per day).I shall stop it the next 3 days in order to do experiences and submit myself to research, Regards and good luck, Joao Paulo Carvalho