An antimalarial medication called Signaquin 200 mg is used to treat lupus erythematosus and malaria. Verify SafeHealthMart's Hydroxychloroquine Sulphate pricing. By lowering immune system activity, COVID protection medication helps treat rheumatoid arthritis and systemic lupus erythematosus. One of the quickest places to purchase 10% off hydroxychloroquine sulphate COVID medication that is prescribed and taken under a doctor's supervision is SafeHealthMart.com. COVID Protection - Hydroxychloroquine Sulphate Pills Online - Safehealthmart