Tacrolimus: An updated review on delivering strategies for multifarious diseases

From the current trends, tacrolimus (TAC) has become an important therapeutic option for the optimal individualization of immunosuppressive therapy especially in case of transplant recipients. TAC is used most frequently in comparison to other immunosuppressants because it offers better safety profile with increased long-term survival in patients especially in children and adolescents. This drug has developed an immense interest in the research field owing to its potential pharmacological scope but due to its poor water solubility, need of concomitant steroids and higher incidences of nephrotoxicity, there comes a need for future research to minimize such limitations and decipher maximum use of the drug. In addition, there are number of formulations attempted to enhance its erratic bioavailability through various techniques namely solid dispersions, inclusion complexes, prodrug approach, SMEDDS etc. The present review aims to acknowledge the TAC pharmacokinetic profile and novel drug delivery systems in multiple diseased conditions by particularly enhancing its poor biopharmaceutical issues as well as dose related toxicity. Collectively, we have updated the data pertaining to the drug delivery prospects of TAC for the period of last 8-10 years.