I developed congestive heart failure and was taken off all RA meds except prednisone for a year. For years, I have been complaining to any of my doctors, who would listen, about the dizziness. I went back to my rheumatologist and he prescribed plaquenil again. In the beginning ( The first year or two) It really helped, with my symptoms, with lupus. This past two years, the dizziness has now, turned in to vertigo. Is it safe to take hydroxychloroquine while pregnant Plaquenil dose for malaria prevention Risk of plaquenil toxicity The deneric plaquenil is not as good as non generic The most conservative opinion would include exams every 6 months with repeat visual fields every 6 to 12 months. My general feeling is to perform annual exams with visual field testing. One study determined that the risk of retina toxicity when patients are taking less than 6.5 mg per kilograms per day is rare. Plaquenil is a slow-acting drug. People who take Plaquenil may begin to notice improvement after one or two months. It may take up to six months before the full benefits of Plaquenil are realized. Plaquenil and Diarrhea - from FDA reports Summary Diarrhea is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 1 - 6 months, also take medication Enbrel, and have Pain. This study is created by eHealthMe based on reports of 57,706 people who have side effects when taking. Now, that I have read this site, explanation of plaquenil, I think the mystery is solved. After taking it for 6 weeks, I had shortness of breath so I stopped taking it. Again, I have been trying to find out , what have been causing the vertigo. Plaquenil 6 months Plaquenil oral Reviews and User Ratings Effectiveness, Ease., Taking Plaquenil for Rheumatoid Arthritis Quinacrine and hydroxychloroquine lupus profundus Taking Plaquenil. Plaquenil is available in 200 mg oral tablets. The usual dose is between one and two tablets per day 200 to 400 mg per day. When Plaquenil works, most patients start to feel improvement after 8-12 weeks. The maximum effect can take 6-12 months. Plaquenil – RheumInfo. Will you have Diarrhea with Plaquenil - eHealthMe. Will you have Immunodeficiency disorders with Plaquenil.. After a month my severe muscle pains went down from an average of 15 incidents per month, to 6 per month, and after a few more months, to just 2-3 per month. I had never gone through even one month of such drastically reduced muscle pain in the 4 years since it started. Depending on what you're being treated for, it can take up to 6 months for the full benefits of Plaquenil hydroxychloroquine. Many people have nausea, stomach cramps, and diarrhea when they first start taking Plaquenil hydroxychloroquine. Find user ratings and reviews for Plaquenil oral on WebMD including side effects and drug interactions, medication effectiveness, ease of use and satisfaction. 25-34 on Treatment for 1 to 6.