The generic name of Fenugreek is Hydroxychloroquine Sulfate Tablets, which has the adverse effect of causing changes in the pigmentation of the skin’s mucous membranes, and therefore taking Hydroxychloroquine Sulfate Tablets may lead to dark pigmentation on the face. 1.Hydroxychloroquine Sulfate Tablets are used for the treatment of rheumatoid arthritis, juvenile chronic arthritis, systemic lupus erythematosus, and lupus rash. It may cause pigmentation of the skin and mucous membranes, as well as adverse reactions such as mood changes, headache, nystagmus, etc. It should not be used by those who are allergic to the drug or by children. 2. When using this drug, you should also pay attention to the standardized eye examination, if there are visual abnormalities, it is recommended to stop the drug. This drug is a prescription drug, it is recommended to use under the guidance of a doctor, to avoid unauthorized use of drugs, to prevent the adverse consequences. If the skin develops melanosis after taking the medicine, you need to consult your doctor for timely intervention.