Jinglan black coffee is a safe product. It is a dietary supplement with official approval number. The main raw material is instant coffee powder. Taking Jinglan black coffee is helpful to improve mental state, eliminate edema, consume excess fat in the body and achieve a certain slimming effect.

However, like any dietary supplement, Jinglan black coffee may also cause some adverse reactions, such as headache, nausea and rapid heartbeat. Therefore, when taking Jinglan black coffee, it should be used according to the recommendations in the product manual, and pay attention to communicate with doctors to confirm its safety.

The above information is for reference only. In case of doubt or discomfort, it is recommended to seek the help of a doctor in time.