Solubility and Taste Masked Behaviour of Cyclodextrin Molecular Inclusion Complex of Lumefantrin

Abstract

Lumefantrine is an antimalarial drugs used especially for pediatric persons. β-Cyclodextrine is used to improve the taste of lumefantrine by forming complexes with them by the solvent evaporation method, respectively. β-Cyclodextrine prevent the release of drug in the saliva. Lumefantrine is a bitter drug. So masking of bitter taste in the formulation is a prerequisite as it improves the compliance of the patient and product value. Lumefantrine with β-cyclodextrin in a drug-polymer ratio 1:1 gave complete taste masking with a satisfactory result obtained in term of in-vivo and in-vitro evaluation visual inspection revealed that lumefantrine was yellow-crystalline. The melting point of lumefantrine was found to be 127℃, respectively. The standard calibration curve of Lumefantrine shows a slope 0.0108 and a correlation coefficient of 0.9997. Compatibility studies show that drugs are compatible with polymers. Solubility study show that the solubility of both drugs are increased in phosphate buffer 6.8 by successfully forming a complex with β-cyclodextrin. The solubility of lumefantrine in saliva (pH 6.8) is 0.408 mg/mL, after complex forming with β-cyclodextrine the solubility of (Lumefantrine complex) is 0.526 mg/mL. In an in-vitro drug release investigation, taste masking occurs when the amount of drug substance in dissolved media is either below the detection threshold for recognizing its taste or is undetectable in the early time points (between 0 and 5 minutes). Taste masking (Taste perception test) 11 volunteers are selected for this test, results show that complex is taste masked successfully. Lumefantrine with β-Cyclodextrine complex is a hopeful approach to enhance solubility, dissolution and drug taste.