Aminoglycan chondroitin can be taken for a long time. This type of medication, when used to treat cartilage-related lesions in the joints, is inherently long term. Because of the slow onset of action of these drugs, it is necessary to take them for a long time to see if they are effective. These drugs are clinically known as slow-acting drugs, so once the disease is diagnosed, they need to be used early and for a sustained period of time. Generally speaking, one month is a course of treatment, and the duration of use is 3-5 months, and then the effect of the drug will be seen before deciding whether to continue using it. However, it should be reminded that if there is no effect or the symptoms worsen after taking these drugs for a period of time, the patient must return to the orthopedic department for a follow-up consultation in a timely manner, so as not to delay the relevant condition by continuing self-medication.