Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Why is plaquenil so expensive Hydroxychloroquine and ibuprofen together Hydroxychloroquine plaquenil and alcohol Sore throat sores, ulcers, or white spots on the lips or in the mouth sticking out of the tongue stomach pain swelling of the feet or lower legs swollen or painful glands trouble with breathing, speaking, or swallowing uncontrolled twisting movements of the neck, trunk, arms, or legs unusual behavior unusual bleeding or bruising The more common side effects that can occur with hydroxychloroquine include headache. dizziness. diarrhea. stomach cramps. vomiting. Hydroxychloroquine can cause an upset tum, it's a common side effect so it could be the longer you're taking it there's a build up effect. Trouble is you've other things coming up so it could be nervous tum, or even the two both making your tum particularly sensitive. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Hydroxychloroquine is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Hydroxychloroquine stomach ulcer Hydroxychloroquine Plaquenil Toxicity and Recommendations., Hydroxychloroquine Side Effects, Dosage, Uses, and More Chloroquine and primeHydroxychloroquine plaquenil sickle cellHydroxychloroquine makes me feel worseShould i take hydroxychloroquine if i have high liver enzymesDoes plaquenil make you gain weight Sore throat sores, ulcers, or white spots on the lips or in the mouth; sticking out of the tongue; stomach pain; swelling of the feet or lower legs; swollen or painful glands; trouble with breathing, speaking, or swallowing; uncontrolled twisting movements of the neck, trunk, arms, or legs; unusual behavior; unusual bleeding or bruising; unusual facial expressions Hydroxychloroquine Side Effects Common, Severe, Long Term.. Stomach upset or hydroxychloroquine? Good morning. - NRAS. Hydroxychloroquine - Side Effects, Dosage, Interactions.. Abnormal Weight Gain and Gut Microbiota Modifications Are Side Effects of Long-Term Doxycycline and Hydroxychloroquine Treatment. Abnormal weight gain is a side effect of long-term doxycycline and hydroxychloroquine treatment. Eradication of Helicobacter pylori increases the incidence of hyperlipidaemia and obesity in peptic ulcer. Summary Pressure ulcer is found among people who take Plaquenil, especially for people who are female, 60+ old, have been taking the drug for 5 - 10 years, also take medication Prednisone, and have Arthritis. Also, generic plaquenil hydroxychloroquine is often associated with more GI side effets than the name brand. Arthritis Center Founded in 1998, the Arthritis Center at Johns Hopkins is dedicated to providing quality education to patients and healthcare providers alike.