Nateglinide(NTG), Repaglinide(RPG), and Glimepiride(GMP) are antidiabetic drugs. These antidiabetic drugs are poorly soluble in water, which affect the bioavailability. In the present work, complex formation of all the three drugs with b-cyclodextrin (b-CD) and Hydroxy propyl bcyclodextrin (HPb-CD) and then the possibility of improving the solubility of NTG, RPG and GMP by complexation with b-C...