A commonly prescribed painkiller and anticonvulsant (seizure medication) widely believed to be “benign” has become increasingly associated with overdose deaths in the United States. The medication is gabapentin, commonly marketed as Neurontin, Horizant, and Gralise. Over the years, gabapentin prescribing has steadily increased, with 64 million prescriptions dispensed in 2016, making the drug the 10th…