Vitamin C is not clearly contraindicated with potassium chloride, so the two can be combined. Vitamin C is a water-soluble vitamin, and the injectable solution of this drug is acidic, so there are contraindications with riboflavin, copper, iron, tert-butyl trichloride, and alkaline drugs and other types of drugs. Potassium chloride is a strong electrolyte drug, neutral, research found that vitamin C and potassium chloride with the use of not affect the efficacy and pharmacological effects, and potassium chloride with the existence of contraindications with the drug broadly include Yansuning, pantoprazole, mannitol and enrofloxacin and so on. Drugs should be used under the guidance of a physician, and it is recommended that patients who need to use vitamin C and potassium chloride for treatment should go to the relevant departments of regular hospitals for detailed consultation and use as prescribed.