These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. How do you take plaquenil Chloroquine in transfection Dermatomyositis rash and plaquenil Chloroquine resistance development 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, ringing in your ears, mood changes, nervousness, irritability, skin rash, itching, or; hair loss. This medication is associated with following side effects loss of balance or coordination. muscle weakness, twitching, or uncontrolled movement. pale skin, easy bruising or bleeding. blurred vision, light sensitivity, seeing halos around light. seizure convulsions. confusion, unusual. The most common side effects are nausea and diarrhea, which often improve with time. Less common side effects include rash, changes in skin pigment such as darkening or dark spots, hair changes, and muscle weakness. If you notice any other effects, check with your healthcare professional. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Other side effects not listed may also occur in some patients. Plaquenil 200 mg tablets side effects Hydroxychloroquine Oral Uses, Side Effects, Interactions., Plaquenil Hydroxychloroquine Oral Uses, Dosage & Side. Ocular toxicity hydroxychloroquineChloroquine bootsGeneric plaquenil priceHydroxychloroquine weight lossPlaquenil 250 One Plaquenil tablet contains 200 mg of hydroxychloroquine sulfate, which is equivalent to 155 mg base. Take Plaquenil with a meal or a glass of milk. Malaria. Prophylaxis Adults 400 mg 310 mg base once weekly on the same day of each week starting 2 weeks prior to exposure, and continued for 4 weeks after leaving the endemic area. Plaquenil - FDA prescribing information, side effects and uses. Hydroxychloroquine Plaquenil. Hydroxychloroquine Side Effects, Dosage, Uses, and More. What are the side effects of hydroxychloroquine Plaquenil? Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. You may report side effects to Health Canada at 1-866-234-2345. Precautions Before taking hydroxychloroquine, tell your doctor or pharmacist if you are allergic to it; or to other aminoquinolines e.g. chloroquine; or if you have any other allergies.