Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. Hydroxychloroquine sulfate solubility What does the drug plaquenil do Chloroquine lysosomal inhibitor sigma Side Effects Nausea, stomach cramps, loss of appetite, diarrhea, dizziness, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. Remember. Sep 13, 2019 Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine Medscape - Indication-specific dosing for Plaquenil hydroxychloroquine sulfate, frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Plaquenil generic vomiting Plaquenil Hydroxychloroquine Uses, Dosage, Side Effects., Hydroxychloroquine Side Effects Common, Severe, Long Term. Chloroquine for research A Reference Listed Drug RLD is an approved drug product to which new generic versions are compared to show that they are bioequivalent. A drug company seeking approval to market a generic equivalent must refer to the Reference Listed Drug in its Abbreviated New Drug Application ANDA. Generic Plaquenil Availability -. Plaquenil hydroxychloroquine sulfate dosing, indications.. Hydroxychloroquine MedlinePlus Drug Information. Apr 10, 2019 Talk with your doctor if you have fever, vomiting, or diarrhea during your treatment. When treating lupus or arthritis, Plaquenil is usually given daily for several weeks or months. For best results, keep using the medication as directed. Hydroxychloroquine oral tablet is available as a brand-name drug and a generic drug. Brand name Plaquenil. Hydroxychloroquine comes only as a tablet you take by mouth. Hydroxychloroquine is used to treat malaria, lupus erythematosus, and rheumatoid arthritis. Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes.