I have been getting these horrible rashes and they are not related to sun exposure. I am starting to wonder if they are related to Plaquenil. Hydroxychloroquine 400 mg cost Plaquenil treatment Generic plaquenil vs name brand Plaquenil eye test It does sound as though u have a allergic reaction. I hope anti histamine doesn't take the edge off the itching this is very important to report to UR doc. He can give u recommendations for dealing with the rash itching reaction by RX the appropiate antihistamine. Plaquenil is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Plaquenil is available in generic form. What Are Side Effects of Plaquenil? Common side effects of Plaquenil include. nausea, vomiting, stomach pain or cramps, loss of appetite, weight loss, diarrhea, dizziness, spinning sensation, headache, Allergic reaction to Plaquenil. Discussion in 'Medications' started by SickANDexhausted, Mar 25, 2015. SickANDexhausted Junior Member. I was just prescribed Plauqenil and was given Hydroxycloroquine Zydus. Less than two weeks in, I had an extremely bad allergic reaction. It started out with these ugly, itchy red hives on my left arm. I've always been one to go for the natural route and am starting to feel like I should just stop taking everything and see what happens - so frustrating. My doctor now wants me to start on Chloroquine instead of plaquenil. Allergic reaction to plaquenil Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria, Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses Plaquenil treatment slePlaquenil visual field testing Mar 25, 2015 I am still fighting this allergic reaction. I just spent a few days in the hospital on IV steroids. they said that Plaquenil can take up to 50 days to clear the body. Anyone else had to deal with this? How long did it take to clear up? Any helpful tips? Also, on a facebook page some people posted pics of their Lupus rashes. Allergic reaction to Plaquenil Lupus Forums at The Lupus Site. Allergic reaction to Plaquenil Lupus Forums at The Lupus.. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. The New Zealand Dermatological Society recommends that to decrease the risk of retina damage, no more than 200mg of Plaquenil should be taken a day, and a dose of 400mg per day should be taken no longer than a few weeks. Do not take Plaquenil if you have ever had an allergic reaction to hydroxychloroquine, chloroquine, or related products or any of the ingredients listed under "Product Description".