Tricordrazine

Tricordrazine is a potent stimulant, originally derived from cordrazine, and commonly used in resuscitation in the 24th century. Dr. Beverly Crusher attempted to use tricordrazine to revive Worf after he experienced heart failure, following a risky surgery using the genitronic replicator to repair his damaged spinal column. The drug is highly potent; 25 ccs of the drug is enough to kill a Klingon. (TNG: "Ethics")