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. Ocular migraine plaquenil High cost of hydroxychloroquine Can taking plaquenil increase chances of getting sick Dextromethorphan and guaifenesin are contained in many medicines available over the counter. If you take certain products together you may accidentally take too much of one or more types of medicine. Read the label of any other medicine you are using to see if it contains dextromethorphan or guaifenesin. The study is based on acetaminophen / dextromethorphan / doxylamine / pseudoephedrine and hydroxychloroquine sulfate the active ingredients of Nyquil and Plaquenil, respectively, and Nyquil and Plaquenil the brand names. Other drugs that have the same active ingredients e.g. generic drugs are not considered. Hydroxychloroquine is commonly used alongside other disease-modifying drugs including methotrexate – especially for rheumatoid arthritis. However, some drugs can interact with hydroxychloroquine. Indigestion remedies for example, antacids including some over-the-counter preparations can stop hydroxychloroquine being absorbed. 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. Hydroxychloroquine and dextromethorphan together Hydroxychloroquine - Side Effects, Dosage, Interactions., Nyquil and Plaquenil drug interactions - eHealthMe Does plaquenil have small amounts of malaria in it Mar 17, 2019 Hydroxychloroquine is a quinoline medicine 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. This medicine is not effective against all strains of malaria. Hydroxychloroquine Uses, Dosage & Side Effects -. Hydroxychloroquine Side-effects, uses, time to work. Does anyone take methotrexate and hydroxychloroquine.. Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. Learn about drug interactions between dextromethorphan hbr oral and doxepin oral and use the RxList drug interaction checker to check drug combinations. 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.