Although not all of these side effects may occur, if they do occur they may need medical attention. 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. Plaquenil stomach pain Chloroquine in hepatic dysfunction Medication likely administered with chloroquine Plaquenil and other antimalarials are the key to controlling lupus long-term, and some lupus patients may be on Plaquenil for the rest of their lives. For this reason, you can think of antimalarials as a sort of “lupus life insurance.” In general, brain fog lingers between several days and several weeks. You can do things to reduce the duration of brain fog. How long brain fog lasts depends largely on things that are under your control. This means, of course, that you can reduce the symptoms of brain fog and shorten their duration. Let’s look at how to clear brain fog quickly. Nov 16, 2012 It does help with fatigue, but I don't think it helps with brain fog or other neuro symptoms. Plaquenil helps with joint pain but not muscle aches and pains. Actually one of the rare side effects is myopathy, which is muscle weakness. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil brain fog Success Story Curing My Patient’s Lupus, Leaky Gut., How Long Does Brain Fog Last and Can You Clear It Quickly? HealthyPlace Is hydroxychloroquine sulfate an immunosuppressive drug Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine Hydroxychloroquine Side Effects Common, Severe, Long Term -. Plaquenil and Brain Fog / Memory Issues / Anti RNP.. Ask the Expert Plaquenil and Sjögren’s. Two days after stopping brain fog is returning. I have not taken pred for more than 6 weeks at one whack. It scares me, but so does the inability to function that brain fog creates. I am only on generic plaquenil at the moment and not really willing to start on anti-depressants because they scare me. Home › Forums › General Discussion › Plaquenil and brain fog This topic has 1 reply, 2 voices, and was last updated 4 years, 9 months ago by Lynne Viewing 2 posts - 1 through 2 of 2 total Author Posts May 8, 2015 at pm #308681 marypartParticipant My daughter was on Plaquenil. Read more I just started on the plaquenil last week, and I know the brain fog was pants before but now I'm starting to scare myself; I keep starting projects and then realising I've forgotten steps or misplaced.