A method of preparing an herbal syrup from lagundi (Vitex negundo), leaves, tanglad (Cymbopogon citrates) leaves, and ginger rhizomes comprising the steps of: weighing the main ingredients of lagundi (Vitex Negundo) leaves, tanglad (Cymbopogon Citratus) leaves and bulbs, and ginger rhizomes placing lagundi leaves in a cooking pot adding 20,000 ml alkaline water in said cooking pot to form a mixture adding the tanglad leaves and bulbs, and ginger in the mixture bringing the mixture to boil in low fire for 30 minutes removing the lagundi leaves, tanglad leaves and bulbs, and ginger rhizomes from the mixture adding sodium benzoate, citric acid, guar gum and sugar to form a solution stirring said solution until dissolved cooling said solution adding the menthol crystal bottling the solution labeling the bottle and shrink sealing thereof.
