A patient who has History of Bipolar disorder is taken Neurontin ( Gabapentin), Lamotrigine (Lamictal), Escitalopram (Lexapor), Risperidone (Risperdal). The doctor also prescribes Requip, Comtan, and Sinemet in an attempt to stop the abnormal movements.
Later, the patient comes back and states none of these medications worked.
In the end, the neurologist advised the patient to stop taking one of the four drugs that he regularly for his bipolar disorder. (Gabapentin, Lamictal, Lexapor, Risperdal). He will need refills on only three of his drugs. Which drug does the patient not need to be refilled?