<prompt> Therapeutic plasma level of digoxin -0.1-0.3 ngml0.8-1.5 ngml1.2 to 2 ngml2.4 ngml  <response>: Ans. is b i.e., 0.8-1.5 ngml o Therapeutic concentration of digitoxin is 15-30 ngml and of digoxin is 0.5-1.4 ngml 