Mr. Cadden was convicted on those charges in March and was sentenced Monday. He also faced second-degree murder charges, but a federal jury did not convict him on those charges.
Prosecutors say when Mr. Cadden was head pharmacist at NECC, he directed the shipment of contaminated drugs produced in dirty conditions even though he knew the drugs were not sterile.
Those drugs sickened 778 patients, including 76 who died, according to Reuters.
Mr. Cadden apologized in court, saying, “As head of a company that made drugs that killed and sickened these people, I say with full sincerity that it breaks my heart to read about how painful their deaths were.”
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