Marmot, bipolar meds do cause tremors. interestingly, parkinsons disease is caused by reduced dopamine production via the substantia nigra In the brain. Bipolar meds likewise reduce dopamine levels to stabilise mood, therefor you get these 'parkinsonian' signs.
Reducing your meds is not wise without medical assistance. These side effects are called 'extra pyrimidial' side effects and some bipolar drugs can bypass this by reducing seretonin levels more so than dopamine. It is worth talking to your doctor about. But please bear in mind I am just a trainee doctor.
The older psych meds called 'typicals' are known for these side effects, the newer 'atypicals' have more of a metabolic side effect, weight gain etc.
The choice depends on your medical history , your diagnosis etc. But talk to your doctor about it If you are being affected by the tremors.
snare x
p.s. Again, I am just a trainee, so seek your doctors advice.