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. Plaquenil help calcium Chloroquine breast cancer Plaquenil works for what diseases Perforin ctll-2 chloroquine In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345. List Hydroxychloroquine Powder side effects by likelihood and severity. Save up to 80% on your prescription with WebMDRx. Consult your pharmacist or physician. Note that chloroquine is not used frequently in the United States and has been replaced by the use of hydroxychloroquine because the latter has fewer side effects. The Plaquenil Problem “Plaquenil toxicity is very distinctive,” said Michael F. Marmor, MD, professor of ophthalmology at Stanford University. Dr. Hydroxychloroquine side effects. Get emergency medical help if you have signs of an allergic reaction to hydroxychloroquine hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Taking hydroxychloroquine 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. Hydroxychloroquine side effects medbullets Hydroxychloroquine - Side Effects, Dosage, Interactions., Rx Side Effects New Plaquenil Guidelines and More - American. Chloroquine chemoPlaquenil weightTaking plaquenil for lupusHydroxychloroquine sulfate 200 mg tab sPlaquenil with ldn 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. Hydroxychloroquine-Induced Retinal Toxicity - American.. Hydroxychloroquine Uses, Dosage & Side Effects -. Hydroxychloroquine Oral Route Precautions - Mayo Clinic. Check with your doctor immediately if any of the following side effects occur Incidence not known. Blistering, peeling, loosening of the skin blurred vision or other vision changes chest discomfort, pain, or tightness cough or hoarseness dark urine decreased urination defective color vision diarrhea difficulty breathing The only side effect taking the drug for me was severe burning mouth syndrome, ringing in the ears and an overall dryness. I am concerned with the drug affecting my vision. I stopped taking the drug because of the cost of am eye exam and office visits and lack of insurance. I am not in a flair. The more common side effects that can occur with hydroxychloroquine include headache. dizziness. diarrhea. stomach cramps. vomiting.