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. Aralen lupus How soon does hydroxychloroquine work Plaquenil heart side effects Jun 16, 2016 The eye side effects of Plaquenil are fairly rare. It does help you feel better and does not suppress your immune system as much as other meds for auto immune diseases. I've been on it for a few years now and so far so good. It helped other things for me such as my blood sugars and allergies. What Are Side Effects of Plaquenil? nausea, vomiting, stomach pain or cramps, loss of appetite, weight loss, diarrhea, dizziness, spinning sensation, headache, ringing in your ears, Hydroxychloroquine Side Effects Get emergency medical help if you have signs of an allergic reaction hives; difficulty breathing; swelling of your face, lips, tongue, or throat. 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 dry mouth Evaluations from Patients who take Hydroxychloroquine., Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses Chloroquine mechanism of action cancerPlaquenil 3 times a weekNatural alternatives for plaquenilWhat is chloroquine Most common side effects people have besides Dry mouth * Pain 126 people, 30.58%. Joint Pain 124 people, 30.10%. Nausea feeling of having an urge to vomit 119 people, 28.88%. Dry Eyes lack of adequate tears 113 people, 27.43%. Breathing Difficulty 97 people, 23.54%. Will you have Dry mouth with Plaquenil - eHealthMe. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Hydroxychloroquine Side Effects Common, Severe, Long Term.. Side effects include irritability, headache, weakness, hair lightening or loss, stomach upset, nausea, dizziness, muscle pain, rash and itching. Rarely, hydroxychloroquine can affect the bone marrow leading to reduced white blood cells leukopenia or platelets thrombocytopenia and abnormal red blood cells anemia. Common side effects Nausea and diarrhea This can often can be combatted by taking Plaquenil with food or milk. Dizziness Precautions with this side effect Do not drive, use machinery. Cramps. Headache. Dry skin. Loss of appetite. Was put on steroids 4 days after onset. Been on them 4 days is not getting any better. Miserable is all I can say othervthan itching terrible. ” Druginformer Identified Side Effects Flatulence, Dizziness, Nausea, Pruritus, Alopecia, Purpura, Diarrhoea, Hallucination.