Physicochemical Stability and In-vitro Efficacy of Aloe vera and Clobetasol Mouthwash

Background and purpose: Oral chronic lesions (OCLs) are challenging inflammatory diseases. Clobetasol is the most effective corticosteroid in treatment of OCLs. Clinical studies showed positive effects of aloe vera gel in improving the signs of inflammation and ulcer in OCLs. The aim of the present study was to design a mouthwash containing aloe vera gel and clobetasol and evaluating its stability and antifungal efficacy. Materials and methods: Aloe vera gel was standardized and clobetasol was analyzed using a validated HPLC method. They were then mixed with suitable excipients to formulate a mouthwash. At days one and 45 after preparation, the pH, clearness, clobetasol assay, and microbial control (preservative test and limit test) of the mouthwash were tested. The efficacy of the optimized mouthwash on Candida albicans was tested and compared with two natural and chemical commercial mouthwashes. Results: Aloe vera gel 100ml contained 36 mg glucomannan. Quality control test confirmed physical, chemical and microbial stability of the mouthwashes after 45 days. The optimized mouthwash showed considerable effects on Candida albicans even at 1:10 and 1:100 dilutions. Conclusion: Considering anti-inflammatory effects of aloe vera gel, it seems that the optimized mouthwash, in addition to having wound healing effects, may prevent candidiasis induced by Candida albicans in patients with OCLs.