 SANTA MONICA, Calif., Nov. 02, 2020 GLOBE NEWSWIRE -- Opiant Pharmaceuticals, Inc. Opiant NASDAQ: OPNT, a specialty pharmaceutical company developing medicines for addictions and drug overdose, announced today that its Chief Executive Officer, Dr. Roger Crystal, is scheduled to present its pipeline at the Jefferies 2020 Virtual London Healthcare Conference on Thursday, November 19th, 2020, at 6:45 pm GMT. 