<prompt> Prophylactic plasma concentration range of lithium in mEq does not include -0.50.80.61  <response>: Ans. is d i.e., 1.0 Different serum concentrations have different effect : - Therapeutic level - 0.8-1.2 mEqL For tt ofacute mania Prophylactic level - 0.5-0.8 mEqL For relapse prevention in bipolar disorder Toxic lithium levels 2.0 mEqL 