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PREVIEW: Can a pill help alcoholics on the road to recovery?

NBC News’ Craig Melvin reports on the latest approaches to treating alcoholism in the U.S. While experts have questioned rehab facilities' heavy reliance on 12-step programs, people with alcoholism are seeking alternative treatments, including one radically different program that allows patients to continue drinking. The report airs Sunday, July 23rd at 7/6c during “Sunday Night with Megyn Kelly” on NBC.