It may have both an anti-spirochaete activity and an anti-inflammatory activity, similar to the treatment of rheumatoid arthritis. And caution is required if patients have certain heart conditions, diabetes, psoriasis etc. How often to take chloroquine Hydroxychloroquine sulfate answer 3 If you experience any of the following symptoms, call your doctor immediately reading or seeing difficulties words, letters, or parts of objects missing. sensitivity to light. blurred distance vision. seeing light flashes or streaks. difficulty hearing. ringing in ears. muscle weakness. Nausea nervousness nightmares sensation of spinning shakiness and unsteady walk uncontrolled eye movements unsteadiness, trembling, or other problems with muscle control or coordination vomiting Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Ginny, I had some very minor diarrhea, nausea, cramping for about a week when I started Plaquenil. Everyone is different, but for me, taking the med about 15 min. after eating, rather than before or with a meal, makes things much easier on my stomach, even for just Advil. The most serious adverse effects affect the eye, with dose-related retinopathy as a concern even after hydroxychloroquine use is discontinued. The most common adverse effects are a mild nausea and occasional stomach cramps with mild diarrhea. Plaquenil nausea Hydroxychloroquine Plaquenil, Hydroxychloroquine Oral Route Side Effects - Mayo Clinic Hydroxychloroquin cardiac protectiveRa hydroxychloroquine Nov 09, 2018 Common side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Plaquenil = explosive diarrhea -. Plaquenil causing nausea lupus -. My Dr. prescribed Plaquenil the other day, I took 2-200mg pills in a 24 hr period and I was sick as a dog. I had stomach cramps, nausea and painful diarrhea, not to mention heart palpitations and an all over uneasiness. By the end of the 24 hrs I had also contracted a chest cold. Needless to say it was a rough couple of days. Feb 19, 2020 Plaquenil Hydroxychloroquine may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Drugs A-Z Pill Identifier Supplements Symptom Checker Diseases Dictionary Media Tell your doctor if any of the following side effects, as they may be indications of a more serious reaction Headache. Loss of appetite. Dizziness. Nausea. Diarrhea, vomiting, or stomach pain. Skin rash.