The hazards and side effects of Cooling Oil are not clear, but it is contraindicated for pregnant women and those who are allergic to the product. This product has the effects of cooling and dissipating heat, relieving itching and pain. Qingliang Oil belongs to a kind of Chinese patent medicine, which is composed of menthol, menthol oil, camphor oil and other ingredients. At present, the harm and side effects of Qingliang Oil are not clear, there is no relevant authoritative information, in general, patients strictly under the guidance of the doctor to use Qingliang Oil is not harmful to the body, and will not cause side effects. However, pregnant women and people who are allergic to this product are prohibited from using Qingliang Oil, so as not to affect normal pregnancy, or cause itching, redness and swelling and other allergic manifestations. Cool oil has the effect of cooling and dissipating heat, relieving itching and pain, waking up the brain and refreshing the mind, etc. It can be used clinically for the treatment of colds and headaches, sunstroke, motion sickness, mosquito bites and other diseases. To summarize, if the patient is not adapted to timely medical treatment, follow the doctor’s instructions to use the cool oil, do not blindly use their own medication, so as not to delay the treatment.