No, Hydroxychloroquine is not a steroid. It is a steroid-sparing agent; It falls under a category of drugs called disease-modifying antirheumatic drugs (DMARDs) - in other words, it reduces the dose of steroids required to treat autoimmune and inflammatory diseases such as rheumatoid arthritis and discoid and systemic lupus erythematosus or SLE. Do not self-prescribe, consult a doctor.