Signaquin contains hydroxychloroquine sulphate 200 mg. Signaquin is nothing but a generic version or a generic name. The chemical class of Signaquin is hydroxychloroquine. Signaquin comes in the form of tablets. It is administered orally. This medication not only slows the progression of the disease but also provides relief from pain and swelling. It is mainly used to treat autoimmune diseases like rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). In addition to RA and SLE, Signaquin is also used in idiopathic vasculitis, graft versus host disease, malaria, etc. This medication is not an over-the-counter (OTC) drug. This simply means you need to show a prescription signed by your physician to the pharmacy in order to buy Signaquin. You can either buy Signaquin online or from the pharmacy. Even if you buy Signaquin online, it’s your utmost responsibility to get it approved by your physician.