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. What exams do i need to take while taking hydroxychloroquine Hydroxychloroquine sulfate uses Chloroquine proguanil boots Hydroxychloroquine card Hi pat i do not suffer from any side effects taking plaquenil but u mus get ur eyes checked at least every 6 mos or yearly the main side effect is blindness.thank God i have not had any problems and have been taking it for many years.this helps good luck n God bless Sep 26, 2011 I started Plaquenil last week and so far the side effects are dizziness, nausea and tummy feeling weird. My doctor said 200mg twice a day, but I've been taking one, perhaps I should let her know? I was just wondering has long it takes to adjust and if taking twice the dose will result in higher discomfort. Plaquenil side effects Get emergency medical help if you have signs of an allergic reaction to Plaquenil hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Taking Plaquenil long-term or at high doses may cause irreversible damage to the retina of your eye. 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 side effects can you drink Plaquenil hydroxychloroquine Basics, Side Effects & Reviews., Plaquenil & Wine - Sjogren's World Plaquenil and valacyclovir Possible side effects of methotrexate include nausea, vomiting, and abnormal liver function. Some patients develop mouth sores, rash, or diarrhea. Tell your doctor if you develop shortness of breath or chronic cough. Additionally, some patients may experience hair loss. Rheumatoid Arthritis Treatment Side Effects. Plaquenil Uses, Dosage & Side Effects -. Lupus Medicines Hydroxychloroquine - Brigham and Women's.. Bad Side Effects of Plaquenil. I have been recently diagnosed with Lupus about 4 months ago and have started plaquenil with the hope it would relieve my symptoms no energy, achy body and severe hair loss. It seems as though it has helped the first two symptoms, but I have horrible constipation. How were your symptoms prior to the Plaquenil. It's so easy to forget that you're feeling like a 5 on the pain scale when previously you were a 3. Talk to your doctor BEFORE you do anything. He or she may want to start you on another drug, give it a chance to work, and THEN stop the Plaquenil. Serious side effects. blurred vision or other vision changes. ringing in your ears or hearing loss. angioedema, or rapid swelling of your skin. hives. mild or severe bronchospasm that causes trouble breathing. sore throat. unusual bleeding or bruising. blue-black skin color. muscle weakness. hair.