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The objective of present study was to evaluate pharmacokinetic parameters of dibudipine Phytosolve after oral administration in rats. The solubility test was carried out to select suitable oily solvent for dibudipine. Phytosolve formulation was prepared with a medium chain triglyceride (MCT) oil (20%), soybean phospholipids (5%) and a 70% fructose solution (75%). The effect of polyol content on the mean globule size of Phytosolve formulation was studied. The optimized formulation was evaluated for robustness toward dilution, transparency, droplet size, zeta potential and transmission electron microscopic analysis. The Phytosolve of dibudipine with an average droplet size of 142.3 ± 4.3 nm and surface charge -18.36 ± 0.37 mv was administered orally to rats. The average relative bioavalabilities of dibudipine in the plasma with Phytosolve were 170.4% and 211.2% as compared to the oily solution and aqueous suspension respectively. So this formulation could be offered as a useful technique to improve the oral delivery of the poorly water soluble drugs such as dibudipine.

Evaluation of Lipid-based Drug Delivery System (Phytosolve) on Oral Bioavailability of Dibudipine