Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Uses of hydroxychloroquine Plaquenil and metoprolol The more common side effects that can occur with hydroxychloroquine include headache. dizziness. diarrhea. stomach cramps. vomiting. Beyond Plaquenil Other Drugs, Other Problems Bisphosphonates are used to manage osteoporosis and other conditions that involve loss of bone mass. Cetirizine Zyrtec and others, an antihistamine, can cause pupillary changes. Erectile dysfunction drugs cause a range of side effects that are. Take this medication with a meal or a glass of milk to prevent stomach upset. Common side effects include nausea, loss of appetite, headache, and diarrhea. Plaquenil can cause blurred vision and dizziness. Do not drive or operate heavy machinery until you know how it affects you. 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. Plaquenil drug side effects Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses, Rx Side Effects New Plaquenil Guidelines and More. Is plaquenil a dmardHydroxychloroquine sulphate pregnancyPlaquenil sjogren disease doesnt work 2019Clinical trials cancer chloroquine Side-effects aren't common. However, in some people hydroxychloroquine can cause skin rashes, especially those made worse by sunlight. feeling sick nausea or indigestion. diarrhoea. headaches. bleaching of the hair or mild hair loss. tinnitus ringing in the ears Hydroxychloroquine Side-effects, uses, time to work. Plaquenil - Side Effects, Uses, Dosage, Overdose.. Plaquenil Indications, Side Effects, Warnings -. Common 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. Get medical help right away if you have any very serious side effects, including chest pain, fast/irregular heartbeat, severe dizziness, fainting, seizures. A very serious allergic reaction to. Plaquenil received an overall rating of 5 out of 10 stars from 4 reviews. See what others have said about Plaquenil, including the effectiveness, ease of use and side effects.