Nitrazepam (NTR), a potent benzodiazepine, is used for the short-term relief of symptoms of anxiety or anxiety associated with depression. Because of its poor water solubility and extensive metabolism in the liver into pharmacologically inactive glucuronides, NTR oral therapy is associated with a slow onset of drug action. Generally, compounds with very low aqueous solubility are considered to have dissolution rate-limited absorption and hence poor absorption, distribution, and target organ delivery