1. Garlic rock sugar water can sterilize, relieve cough and reduce phlegm. Because garlic can sterilize, detoxify and cleanse the intestines, lower blood sugar, relieve itching, clear the mind, and keep blood pressure normal.

2. Rock sugar can replenish qi, harmonize the stomach and moisturize the lungs, relieve cough and reduce phlegm, relieve sweating and detoxification, and relieve sore throat. Therefore, stewing garlic with rock sugar has the effect of resolving phlegm and relieving coughs. It can also relieve colds and cure colds and colds. However, it should be noted that boiling garlic with rock sugar in water is only suitable for coughs caused by wind and cold, but not for all coughs.