Table 3. Pharmacological Agents to Treat Orthostatic Tremor.

Medication	Dosage	Clinical Efficacy	Comment
Clonazepam	0.5–6 mg/day	+++	Documented effect
Gabapentin	300–2400 mg/day	++	Documented effect
Levodopa	300–800 mg/day	++	Only short-term benefit
Pramipexole	0.75 mg/day	+	Anecdotal effect
Primidone	125–250 mg/day	+	Anecdotal effect
Valproic acid	500–1000 mg/day	+/–	Anecdotal effect
Carbamazepine	400 mg/day	+/–	Anecdotal effect
Phenobarbital	100 mg/day	+/–	Anecdotal effect
Intravenous immunoglobulin1	2 g/kg over 3 days	+	Anecdotal effect
Propanolol	120 mg/day	–	Without effect
Levetiracetam	3000 mg/day	–	Without effect
Botulinum toxin	200 mU in the tibialis anterior bilaterally	–	Without effect
Alcohol	–	–	Without effect

¹It was used in a case of slow orthostatic tremor associated with a novel antineuronal antibody.¹⁰³