How long does it take to work depends on two factors, one is whether the medicine is given in sufficient quantity, and the other is the severity of the symptoms. If the medicine is given in sufficient quantity, it should be taken according to the course of treatment in Chinese medicine, 1-2 weeks is a course of treatment, and there should be some effect within 1-2 weeks. If the symptoms are mild, there will be more obvious relief soon. However, if the symptoms are severe or acute, the efficacy may not be very clear. It is generally used for breast fetish and canker sores caused by phlegm and heat, such as breast nodules, varying in number, size and shape, soft texture, or postpartum breast lumps, redness, swelling and pain, which is also known as early stage of mastopathy and mastitis in western medicine, with the effect of softening and dispersing nodules, activating blood circulation and eliminating pain, clearing heat and detoxifying toxins. Once the efficacy of short-term use is not good, or there is an intolerable reaction, you should stop the drug in time, consult a pharmacist and go to the hospital.