Hydroxychloroquine is available as the brand-name drug Plaquenil. Generic drugs usually cost less than the brand-name version. Hydroxychloroquine may be used as part of a combination therapy. How does plaquenil help fight lupus Plaquenil and nail changes Can plaquenil cause a positive nicotine urine test Hydroxychloroquine Plaquenil is an older DMARD sometimes still used for mild RA. It may work by interrupting signaling among cells. It’s one of the best tolerated DMARDs. Side effects are usually mild and may include nausea and diarrhea. Taking the drug with food may help. Changes to the skin are less common. Hydroxychloroquine sulfate is a colorless crystalline solid, soluble in water to at least 20 percent; chemically the drug is 2-4-7-Chloro-4-quinolylaminopentylethylamino ethanol sulfate 11. PLAQUENIL hydroxychloroquine sulfate tablets contain 200 mg hydroxychloroquine sulfate, equivalent to 155 mg base, and are for oral administration. 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 is used to treat lupus erythematosus and rheumatoid arthritis. It isn’t fully understood how this drug works to treat lupus erythematosus or rheumatoid arthritis. That means you may need to take it with other drugs. It treats malaria by killing the parasites that cause the disease. Hydroxychloroquine sulphate Hydroxychloroquine Sulfate Bulk Uses, Side Effects., Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects. Plaquenil live vaccinesChloroquine cell effectPlaquenil sun sensitivity tingling PLAQUENIL® hydroxychloroquine sulfate is a white or practically white, crystalline powder, freely soluble in water; practically insoluble in alcohol, chloroform, and in ether. PLAQUENIL® HYDROXYCHLOROQUINE SULFATE TABLETS, USP. Hydroxychloroquine Uses, Dosage & Side Effects -. HYDROXYCHLOROQUINE SULPHATE 200MG TABLETS. Overdose. Hydroxychloroquine is very toxic in overdosage; overdosage is extremely hazardous and difficult to treat. Urgent advice from the National Poisons Information Service is essential. Life-threatening features include arrhythmias which can have a very rapid onset and convulsions which can be intractable. All doses below are expressed as hydroxychloroquine sulfate salt. Hydroxychloroquine sulfate salt 200 mg is equivalent to hydroxychloroquine base 155 mg. Hydroxychloroquine sulfate. An antimalarial, antirheumatic drug, often used as a disease-modifying agent in rheumatoid arthritis, systemic lupus erythematosus, and some dermatological diseases.