Lectrazine is used to stabilize the cardiac and renal systems of humanoids. It can also be combined with hyronalin for temporary protection against radiation poisoning.
In 2372, The Doctor administered 20 milligrams of lectrazine to the Vidiian doctor Denara Pel in order to stabilze her cardiovascular and renal systems. (VOY: "Lifesigns")
In 2373, The Doctor gave Kes lectrazine to counteract the disruptions in her cardiac functions. (VOY: "Sacred Ground") Kes attempted to give Tiernan 20 milligrams of lectrazine in order to save his life, but Tiernan's biochemistry is incompatible with the medication. (VOY: "Warlord") The Doctor gave Lieutenant Tom Paris a combination of lectrazine and hyronalin to temporarily protect him from radiation poisoning. (VOY: "Real Life")
In 2374, The Doctor gave 20 milligrams of lectrazine to a member of the bridge crew when she was in hypertensive shock. (VOY: "Scientific Method")