Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. Is plaquenil an immunosuppressant Hydroxychloroquine making sunlight painful Plaquenil nerve damage Antimalarial Drugs. If your plans include travel to southern Africa or another part of the world where malaria is common, you might need medicine to protect yourself against the mosquito-borne disease. But be aware. If you have psoriasis, chloroquine Aralen and hydroxychloroquine Plaquenil can cause problems. 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 Blood Pressure and Heart Medications. Both calcium channel blockers and beta blockers have been tied to vaginal dryness in some women. Calcium channel blockers, which prevent calcium from entering the cells of the heart and blood vessel walls, are used to lower blood pressure. 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 and atenolol , Hydroxychloroquine Side Effects Common, Severe, Long Term. Effects of chloroquine on the liver Use WebMD’s Drug Interaction Checker tool to find and identify potentially harmful and unsafe combinations of prescription medications by entering two or more drugs in question. Drug Interaction Checker - Find Interactions Between.. Medications That Cause Vaginal Dryness. Hydroxychloroquine sulfate and Atenolol drug interactions.. For patients taking hydroxychloroquine to prevent malaria Your doctor may want you to start taking this medicine 1 to 2 weeks before you travel to an area where there is a chance of getting malaria. This will help you to see how you react to the medicine. Atenolol is used with or without other medications to treat high blood pressure hypertension. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This medication is also used to treat chest pain and to improve survival after a heart attack. Atenolol belongs to a class of drugs known as beta-blockers. It works by blocking the action of certain natural. Find patient medical information for Atenolol Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.