Formulation, Preparation and Evaluation of Antiperspirant Effects of Hydrogel of Salvia virgata Jacq Aerial Part: A Randomized, Double Blind and Placebo-Controlled Clinical Trial

Background and purpose: Salvia virgata Jacq has antioxidant, antibacterial, anti-inflammatory, antinociceptive, antispasmodic, and healing effects. The aim of this study was to prepare and antiperspirant clinical evaluation of aerial gel formulation of this plant. Materials and methods: The aerial parts of the plant were collected from Hezarjarib forest in Mazandaran, spring 2017. The samples were crushed, dried and extracted with 70% ethanol. The amount of total flavonoids of the extract was investigated by spectrophotometric method of Aluminum Chloride with Quercetin standard. For antiperspirant clinical study, 5% gel formulation of dried extract was prepared. The gel was formulated by carbopol 980, glycerin, methyl, propylparaben, triethanolamine, and 5% dried plant extract. Then, physicochemical and microbial properties of the product, including stability, consistency, viscosity, dispersibility, transparency, color, odor, and bacteria growth were investigated in general and specific culture media. After preparation, in this randomized double-blind study, the products and placebos were administered to the volunteers (twice daily). Hyperhidrosis Disease Severity Scale (HDSS) was completed and clinical indicators were evaluated. Results: In this study, the extract yield and total flavonoid content of the extract were 39.88% and 49.83 mg/g, respectively. In addition, 1% carbopol formulation had good physicochemical properties and significant difference was seen in the efficacy of the drug between the intervention and placebo group (P