Abstract: In certain embodiments the invention is directed to an oral solid pharmaceutical dosage form comprising: a first portion of a short acting sedative-hypnotic in an release immediate release component; and a second portion of the sedative-hypnotic in a delayed component, the delayed release component comprising (i) a unitary core comprising the second portion of sedative-hypnotic dispersed in a controlled release matrix and (ii) a delayed release coating surrounding the core.