Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take hydroxychloroquine with all of your drugs and health problems. What is hydroxychloroquine and shortness of breath Can plaquenil cause abdominal pain Each white-to-off-white, film-coated, peanut-shaped tablet with "PLAQUENIL" in black on one side contains 200 mg of hydroxychloroquine sulfate equivalent to 155 mg of base. Nonmedicinal ingredients black ink, calcium hydrogenophosphate, carnauba wax, corn starch, magnesium stearate, opadry White YS-I-7443, and polyethylene glycol 400. Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. Hydroxychloroquine is in a class of medications that was first used to prevent and treat malaria. For all uses of hydroxychloroquine: WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Do not start, stop, or change the dose of any drug without checking with your doctor. Plaquenil calcium Hydroxychloroquine - Side Effects, Dosage, Interactions., Hydroxychloroquine Plaquenil Side Effects & Dosage for Malaria Chloroquine synthesis mechanismPlaquenil dosage guidelines The calcium pyrophosphate crystal deposits of CPPD affect about 3% of people in their 60s and as many as 50% of people in their 90s. The release of the calcium pyrophosphate crystals into the joint fluid can attract white blood cells, leading to a painful attack. Calcium Pyrophosphate Deposition CPPD. Hydroxychloroquine Plaquenil. . Im about to start taking calcium and have read that if you taka antiacids or calcium they should be taken at least 4 hours apart from plaquenil. Calcium Carbonate Major Hydroxychloroquine absorption may be reduced by antacids as has been observed with the structurally similar chloroquine. Administer hydroxychloroquine and antacids at least 4 hours apart. Hypercalcemia developed in a patient undergoing long-term hemodialysis, and she was found to have noncaseating granulomas on lymph node biopsy. Hydroxychloroquine was administered as therapy for the hypercalcemia. Over 24 weeks of treatment with the drug, concentrations of calcium and 1,25-dihydroxyvitamin D returned to normal.