Where can I get original OC stamped oxycontin vs. new OP stamped version in Mass?

I broke my neck a few years back and after a couple of cervical fusion surgeries suffer from severe chronic pain. I swear that the old OC stamped oxy's worked better for me than the newer OP stamped version. I think they began working faster and eased the pain better than the new ones. Do you know if there anywhere in Mass I can get the old ones?

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