This medicine is rarely used for health care on weekdays. Once it comes to some flu season or when people are unwell, people will think of using it. If you buy it for a long time, can you still eat it after it expires? If you are a careful person, it is recommended not to use expired health care products. Although it is not a drug, it may have a negative impact on your health after it expires. Generally speaking, however, it is no problem that this kind of health care products are overdue 1~2 months. As long as it is not in direct sunlight or wet places, it can be used normally, and the curative effect will not decrease. Double-hearted garlic essence is a health care product of German brand. Compared with domestic brands, imported garlic essence is safer. As long as it is not overdue 1~2 years, it can be used for several months or even more than half a year. Although they all have good health care effects, it is not recommended to use them for a long time for some people with strong liver fire.