It feels like dementia just hit, and I've got a load of driving to do this week. I know these meds take time to work but good grief, anyone else take thus stuff and gad this happen to them? This is almost as bad as the methotrexate (which was awful, I couldn't think straight full stop)Hello! Hydroxychloroquine mechanism of action lupus Chloroquine diphosphate packaging Hydroxychloroquine 200 mg twice a day Retinal toxicity from hydroxychloroquine is rare, but even if the medication is discontinued, vision loss may be irreversible and may continue to progress. It is imperative that patients and physicians are aware of and watch for this drug’s ocular side effects. 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 If you have lupus and suffer from cognitive difficulties or forgetfulness, you may be experiencing lupus fog. Here’s how to work around some of your concentration and memory problems with lupus. I say things wrong but don't realise it, I forget people's names, forget the names for objects etc. I worked in personal injury until 4 years ago and now looking back that was my first flare. Never forgot a thing and had a great memory for details. I work as a Teaching Assistant now, which is great and it suits, as I have 3 small children. My Dr started me on asprin though for sticky blood and that certainly has helped - I'm not anywhere near as confused or forgetful as I was, although I do still have my moments! Been on hydroxy for 8 months and I still get mild symptoms including the brain fog. I was awful with brain fog too but I'm not sure the hydroxy made it worse. Hydroxychloroquine memory loss Hydroxychloroquine Oral Uses, Side Effects, Interactions., Hydroxychloroquine Side Effects Common, Severe, Long Term. Hydroxychloroquine retinal deposits The brain fog immediately disappeared. In about a month, the pain and swelling came back, along with digestive problems, so the doctor cut the hydroxychloroquine back to 1 tablet a day, increased the prednisone and added a low dose of methotrexate. I am afraid of the methotrexate, but it does help with the pain and swelling. RA, meds, and brain fog?" Rheumatoid Arthritis Community.. Lupus Fog and Memory Problems. Plaquenil Hydroxychloroquine Side effects, Images, Uses.. 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 something I was just holding, wandering aimlessly. New research finds that measuring blood levels of the medication hydroxychloroquine Plaquenil in people with lupus may be an effective way to predict risk of retinopathy, a disease which results in impaired or complete loss of vision. The study assessed 537 people with lupus and measured the levels of the drug present in their blood. Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth.