Regardless of the problem, we'd like to help you find what you're looking for. Applies to hydroxychloroquine: oral tablet Along with its needed effects, hydroxychloroquine (the active ingredient contained in Plaquenil) may cause some unwanted effects. Hydroxychloroquine plaquenil 200mg Chloroquine phosphate usp Learn more about services at Mayo Clinic. About this study. The primary objective of this study is to assess the potential effectiveness of once daily application of Valchlor in decreasing disease activity in patients with Lichen Planopilaris. Some side effects of hydroxychloroquine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. According to the Mayo Clinic, it can take up to six months' constant use before an effect is seen in RA 1. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Although not all of these side effects may occur, if they do occur they may need medical attention. Side effects of plaquenil mayo clinic Plaquenil Side Effects Common, Severe, Long Term -, Hydroxychloroquine Side Effects Common, Severe, Long Term. Military use of chloroquine in hondurasMg per kg body wt hydroxychloroquine dosage However, this medicine is not used to treat severe or complicated malaria. Hydroxychloroquine is used to treat discoid lupus erythematosus DLE or systemic lupus erythematosus SLE or lupus. It is also used to treat acute and chronic rheumatoid arthritis. Hydroxychloroquine Oral Route Description and. - Mayo Clinic. Long-Term Side Effects of Plaquenil for Rheumatoid Arthritis. Plaquenil Oral Uses, Side Effects, Interactions, Pictures.. I have been on Plaquenil 200 mg twice a day for 6 years and it has helped me tremendously. I couldn't get up from a chair or close my fists after being diagnosed with primary Sjogrens Syndrome. It took about a year, and I'm 90 % better. I am very careful to have a thorough eye exam every year to monitor potential ocular side effects. Plaquenil Side Effects by Likelihood and Severity INFREQUENT side effects. If experienced, these tend to have a Severe expression. A Disorder Of The Retina Of The Eye;. RARE side effects. A friend who lives many, many miles from me went to Mayo Clinic for surgery and sent me to a Mayo Clinic website for an explanation of her surgery. While at the site, I found links to other areas of healthcare and that\'s how I found MCC. Besides having RA, I am a type II diabetic and was diagnosed with Osteoporosis in July, 2017.