Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. Is mefloquine the same as hydroxychloroquine Chloroquine primaquine babesia Plaquenil and diarrhea eventually goea away Interactions between your drugs. It is best not to take hydroxychloroquine and calcium carbonate at the same time. Products that contain magnesium, aluminum, or calcium such as antacids and some other gastrointestinal medications may interfere with the absorption of hydroxychloroquine and reduce its effectiveness. Iron and calcium supplements interfere with how your body absorbs your thyroid medications, so these should be spaced at least an hour apart. Another supplement to watch out for is biotin, commonly taken for hair, skin, and nail benefits. To date, the consensus is that there has been no proven risk of increased cardiovascular risk with intake of calcium supplements. Other studies have examined the risk of damage to jaw tissue with the use of bisphosphonates, one type of medication commonly used to treat osteoporosis. The risk is real, but rare. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Plaquenil and calcium citrate Calcium Supplements and High Blood Pressure Medications, Things That Can Mess With Your Thyroid Medication - GoodRx Aralen dosisCan you take phenylephrine with plaquenil Calcium supplements — or antacids containing calcium — can interfere with the absorption of thyroid hormone replacement medications, such as synthetic thyroid hormones levothyroxine Synthroid, Unithroid, others and liothyronine Cytomel, as well as thyroid extract supplements. Hypothyroidism Can calcium supplements interfere with.. Starting an osteoporosis drug? Here's what you need to.. Plaquenil and calcium. Mg of Calcium citrate w/500mg of Magnesium per NIH recommendations to help counter bone loss caused by the prednisone - 400mg Plaquenil daily - 20mg Leflunomide daily - at times. 400mg ibuprofen every 6 hours for flares of severe joint pain caused by the RP. the past week this has been happening in my kneecap cartilage. She says I have all signs of Fibro and that may actually be causing me more distress than the antibodies. Anyhow, I was researching to see if Plaquenil interferes with any vitamins or supplements since I take quite a few and read several articles on how Plaquenil depletes Vit D and Calcium. For those of you who take calcium tablets, I saw on there is a facility to check drug interactionsthat taking Plaquenil at the same time with calcium could reduce the efficacy of Plaquenil by up to 50%. To get around that, it is best to leave 4 hours between taking either of them.