San Francisco health authorities are raising urgent concerns after a powerful synthetic opioid was detected in the city for the first time, and is already being tied to a fatal overdose earlier this month. Officials with the San Francisco Department of Public Health say the drug, known as cychlorphine, surfaced in a counterfeit pill, prompting alarm over its extreme potency and unpredictable presence in the illicit drug market. “We believe it is more potent than fentanyl. It was found we believe in someone using a counterfeit pill,” Daniel Tsai, director San Francisco Department of Public Health told ABC7. Law enforcement...