Telmisartan (TEL) was entrapped into β-cyclodextrin aiming the improvement of its biopharmaceutical properties of low solubility. A solid state grinding process was used to prepare the molecular inclusion complex (MIC) for up to 30min. The inclusion ratio of drug and β-cyclodextrin was established as 1:2 and 1:3 (mol/mol) by phase solubility study and Job Plot. DSC, XRPD and FTIR confirmed the molecular interactions between TEL and β-cyclodextrin. Computer molecular modeling supports the presence of hydrogen bonds between guest and host and demonstrated the most probable complexes configuration. MIC_1:2_30 and MIC_1:3_30 enhanced the dissolution rate of the drug achieving a delivery rate comparable with the reference medicine available in the market (81% and 87% in 5min, for MIC_1:3_30 and Micardis(®), respectively). These formulations showed rapid and effective antihypertensive effect against angiotensin II in rats up to 180min, with statistically significant results against placebo and control in the first 30min after administration.
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