Search by Drug Name A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Clinical Trials for ALFENTA Clinical trials list click for details Comparison of Propofol/Alfentanil With Propofol/Ketamine Alfentanil Versus Remifentanil in Patient-controlled Sedation During Endoscopic Retrograde Cholangiopancreatography (ERCP) Heritability of Opioid Effects: A Twin Study