Zinc chloride also works by keeping in check the intensification of bad breath bacteria. It is also used in other momentary breath fresheners like lozenges, sprays, mints and even chewing gum. How do the companies make it? Most popular zinc chloride manufacturers in Kolkata use an aqueous type of zinc chloride, which is made by combining hydrochloric acid with zinc. Alcohol, general in many mouthwash brands, is a substitute. Although, it doesn't meet most of their health standards and can cause a painful burn for some users. For users who want to keep away from this component, make sure you check out the list of ingredients mentioned on the labeling of the product you are purchasing. How safe is zinc chloride in mouthwash? Zinc chloride has a long history of use as an efficient mouthwash component. The FDA (Food and Drug Administration) has permitted its use as a drug functional in the harsh warning in oral care OTC (over the counter) drug products w...