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Drugs that cause Nystagmus

Generic Name Trade Name Pharmaceutical class
Cannabinoids Spice/K2 Drug of abuse, cannabinoid
Dextromethorphan Delsym Antitussive
Gabapentin Neurontin Anticonvulsant
Ketamine Ketalar Anesthesia
Lamotrigine Lamictal Anticonvulsant
Lithium Lithobid treatment for Manic depressive; bipolar
Methocarbamol Robaxin Skeletal muscle relaxant
Phencyclidine (PCP) Sermylan Veterinary Anesthesia
Phenytoin/fosphenytoin Dilantin, Cerebyx Anticonvulsant
Phenobarbital Luminal Anticonvulsant
Primidone Mysoline Anticonvulsant

Common ocular effects reported to a poison control center after systemic absorption of drugs in therapeutic and toxic doses. Slattery A et al. Curr Opin Ophthalmol 2014;25:519-523