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. Chloroquine prophylaxis dosage Does plaquenil change heart rate Hydroxychloroquine plaquenil direct sun light What is the genetic cause of chloroquine resistance Find information about common, infrequent and rare side effects of Plaquenil Oral. Aug 26, 2016 In summary Plaquenil isn't causing tyour new problems. It probably caused only the nausea, diarrhea, stomach cramps, and intense vertigo. BTW 100 mg daily may reduce side effects, but this low dosage also greatly annihilates its positive effects. 100 mg are a drop maybe two. on a hot stone. And finally I'm sorry you've had a bit of stomach upset. As you see from the replies, some do have some stomach issues from it, but many of us don't. I only had a slightly upset stomach and IBS problems for about the first 2 weeks. From then on, I was fine. I make sure I eat something when I take it; that seems to be important. 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. Can plaquenil cause stomach and esophagus problems Does Plaquenil Cause Gerd – How to cure heartburn, Plaquenil side effects - kidney problems? - Symptoms - Life. Plaquenil false positive drug test Hydroxychloroquine oral tablet doesn’t cause drowsiness, but it can cause other side effects. More common side effects. The more common side effects that can occur with hydroxychloroquine include Hydroxychloroquine Side Effects, Dosage, Uses, and More. Upset stomach from plaquenil - Sjogren's World. Can Plaquenil cause acid reflux and pain when swallowing?. Sep 13, 2019 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. Plaquenil hydroxychloroquine has been shown to improve physical function in up to 80% of patients with rheumatoid arthritis. Plaquenil hydroxychloroquine is commonly used for lupus in children because of less side effects compared to other medications. Plaquenil hydroxychloroquine helps minimize joint damage. Esophageal ring. A thin area of narrowing in the lower esophagus can intermittently cause difficulty swallowing solid foods. GERD. Damage to esophageal tissues from stomach acid backing up into your esophagus can lead to spasm or scarring and narrowing of your lower esophagus. Eosinophilic esophagitis.