I have a question about the drug, Plaquenil, AKA hydroxychloroquine. My interest stems from the book I am writing, Nurse Mary’s Guide to Rheumatoid Arthritis. After reading several additional medical reports about Plaquenil, I realized I needed to look further and to expand its section in the medication chapter of my book. Another reason for my interest was that I had been taking Plaquenil for six years for my RA.  I was taking it in addition to methotrexate injections and Medrol. I had  also been taking it while I was taking tamoxifen for breast cancer. I no longer take tamoxifen as I developed a rare serous uterine cancer associated with using the drug. None of my doctors questioned the risk involved in taking both drugs. I also made the mistake in thinking Plaquenil was a mild drug. In fact, it does treat mild RA and more aggressive RA when given in combination with other drugs. The drug itself is not mild. Hydroxychloroquine was developed as an antimalarial in 1955. It was a refined version with …