Identification of Candesartan Cilexetil-L-Arginine Co-amorphous Formation and Its Solubility Test

Fikri Alatas (1) , Erina Sifa Mutmainah (2) , Hestiary Ratih (3) , Titta Hartyana Sutarna (4) , Sundani Nurono Soewandhi (5)
(1) Universitas Jenderal Achmad Yani , Indonesia
(2) Universitas Jenderal Achmad Yani , Indonesia
(3) Universitas Jenderal Achmad Yani , Indonesia
(4) Universitas Jenderal Achmad Yani , Indonesia
(5) Institut Teknologi Bandung , Indonesia

Abstract

The formation of co-amorphous is one alternative that can be attempted to enhance the solubility of drugs. The study aimed to identify the co-amorphous formation between candesartan cilexetil (CAN) and l-arginine (ARG) and to know its effect on the solubility and dissolution rate of candesartan cilexetil. Initial prediction of co-crystal formation was undertaken by observing differences in crystal morphology between the candesartan cilexetil-l-arginine (CAN-ARG) mixture and each of its initial components due to crystallization in ethanol. The CAN-ARG co-amorphous was produced by the liquid-assisted grinding (LAG) method with the same molar ratio of the CAN and ARG mixture using ethanol as solvent. The co-amorphous formation of CAN-ARG was identified by powder X-ray diffraction (PXRD) and differential scanning calorimetry (DSC) methods. The solubility and dissolution test was performed to know the impact of the co-amorphous CAN-ARG formation. The PXRD pattern of CAN-ARG of LAG result showed a very low peak intensity compared to pure CAN and ARG. The DSC thermogram of the CAN-ARG LAG result does not show any sharp endothermic peaks. The PXRD and DSC results reveal that CAN and ARG can form co-amorphous. The solubility and dissolution rate of candesartan cilexetil in co-amorphous CAN-ARG was better than that of pure CAN. It can be concluded, liquid-assisted grinding of CAN-ARG mixture is identified to form co-amorphous which has an impact on increasing the solubility and dissolution rate of candesartan cilexetil.

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Authors

Fikri Alatas
fikri.alatas@lecture.unjani.ac.id (Primary Contact)
1.
Alatas F, Mutmainah ES, Ratih H, Sutarna TH, Soewandhi SN. Identification of Candesartan Cilexetil-L-Arginine Co-amorphous Formation and Its Solubility Test. Borneo J Pharm [Internet]. 2022Feb.28 [cited 2025Apr.7];5(1):27-34. Available from: https://journal.umpr.ac.id/index.php/bjop/article/view/2942

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