Nene,
I have Parkinson's disease and my primary symptom is tremor. I don't know how meds for PD compare to meds for ET. I can only tell you my experiences with PD and tremor.
I take Requip and it helps reduce my tremor. Requip is a dopamine agonist - the primary other dopamine agonist for PD is Mirapex. (Neupro, a dopamine agonist in the form of a patch was recently recalled due to efficacy issues - delivery mechanism - NOT due to safety issues ... we hope it will be back on the market soon.) Other PD-related meds for tremor are Artane and Inderal (is actually a blood pressure med and has another multii-syllable name that starts with Pro...). One drawback to Artane is that it sometimes seems to cause (?) cognitive issues.
Best thing is to talk to your doc/neuro/movement disorder specialist (MDS) about your symptoms, your reactions (to meds, etc), your concerns. With PD everyone's symptoms and responses to meds are unique. I realize you are asking about ET. The best thing is to educate yourself and take an active role in your treatment program. You are your own best advocate.
lizzy4451