Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Plaquenil causes leg weakness in psoriatic arthritis Massive hydroxychloroquine overdose Chloroquine phosphate amazon 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 is dispensed as 200 mg tablets, which is equivalent to 155 mg of the base. Hydroxychloroquine should be taken with a meal or a glass of milk to minimise the gastrointestinal side effects. Alternate-day dosing can be used. Get medical help right away if you have any very serious side effects, including sensitivity to light, vision changes e.g. blurred vision, seeing light flashes/streaks/halos, missing/blacked-out areas of vision, muscle weakness, numbness/tingling/pain of the arms/legs. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Adverse effects of hydroxychloroquine Hydroxychloroquine Indications, Side Effects, Warnings., Hydroxychloroquine DermNet NZ Hydroxychloroquine and sunPlaquenil 200 mg cenaPlaquenil and drug induced lupus The more common side effects that can occur with hydroxychloroquine include headache. dizziness. diarrhea. stomach cramps. vomiting. Hydroxychloroquine Side Effects, Dosage, Uses, and More. Hydroxychloroquine Oral Uses, Side Effects, Interactions.. Plaquenil Side Effects Common, Severe, Long Term -. Common Plaquenil 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 is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Rheumatoid Arthritis. The action of hydroxychloroquine is cumulative and may require weeks to months to achieve the maximum therapeutic effect see CLINICAL PHARMACOLOGY. Initial adult dosage 400 mg to 600 mg 310 to 465 mg base daily, administered as a single daily dose or in two divided doses.