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, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Hydroxychloroquine retinopathy and night vision Average dose for plaquenil is 1 tablet daily It’s an issue because the only treatment I have is giving myself IM Toradol injections, which is not fun and can cause stomach bleeding. I stopped the plaquenil again and it has cleared up. I mentioned this to my cardiologist at the Marfan Center at Stanford where I am seen for Ehlers-Danlos Syndrome and he said he had heard of people. I did initially have some stomach trouble when I first started. It went away within a week or two. It's important to take it with a little food. I take mine 200 mg morning and evening rather than all at once. My pharmacy switched me to another generic about 6 mos. after starting on it and the stomach issues started all over again, only worse. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Although not all of these side effects may occur, if they do occur. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Plaquenil and stomach issues Plaquenil Hydroxychloroquine - Side Effects, Dosage, Interactions - Drugs, Plaquenil - Chloroquine 750 mgWhat labs are needed for plaquenilChloroquine nursing considerationsChloroquine santa cruz Plaquenil is an arthritis medication and an anti infectious agent. Uses Plaquenil is prescribed for Lupus, RA, Sjogren's Syndrome and Joint Pain and is mostly mentioned together with these indications. Can Plaquenil cause Stomach Issues? - Treato. Plaquenil Side Effects Common, Severe, Long Term -. Hydroxychloroquine and stomach problems - Sticky Blood-Hugh.. Plaquenil is the brand name of hydroxychloroquine, a drug used to prevent or treat malaria. Plaquenil can cause serious side effects when used in high doses for chronic diseases such as RA over the long term. If a stomachache does occur, it is usually temporary. However, if you experience stomach upset while taking generic hydroxychloroquine, ask your doctor about trying name-brand Plaquenil instead. While these medications contain the same active ingredient, the preparation of generic hydroxychloroquine can sometimes cause stomach irritation. Common Plaquenil side effects may include headache, dizziness, ringing in your ears; nausea, vomiting, stomach pain; loss of appetite, weight loss; mood changes, feeling nervous or irritable; skin rash or itching; or. hair loss.