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Medications or Substances causing Hand tremors. Medications or substances causing Hand tremors. The following drugs, medications, substances or toxins are some of the possible causes of Hand tremors as a symptom. This list is incomplete and various other drugs or substances may cause your symptoms (see Hand tremors).
Medicines likely to affect the tremor include: 1  Stimulants such as methylphenidate (Ritalin) 2  Lithium (Lithobid, others) 3  Valproate (Depacon) 4  Antidepressants. 5  Thyroid replacement medicine (in excessive doses)