Plaquenil is used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Malaria is common in areas such as Africa, South America, and Southern Asia. When is it best to take plaquenil Chloroquine and ambien The usual starting dose of Plaquenil is 200 mg twice a day or 400 mg once a day, administered orally, in people weighing 80 kg or more. The usual dosage works for most people who take Plaquenil, but it is possible to increase or decrease the dose based on individual needs. It's important to watch for possible side effects and toxicity. Does Plaquenil Interact with other Medications? Severe Interactions. These medications are not usually taken together. Consult your healthcare professional e.g. doctor or pharmacist for more in. Apr 10, 2019 Take Plaquenil exactly as prescribed by your doctor. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. Plaquenil is sometimes given only once per week. Choose the same day each week to take this medicine if you are on a weekly dosing schedule. Take Plaquenil. Plaquenil is also an antirheumatic medicine and is used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. This medicine is not effective against all strains of malaria. Can metoprolol and plaquenil be taken together Meloxicam Oral Route Before Using - Mayo Clinic, Plaquenil Oral Interactions with Other Medication Plaquenil toxicity heartPlaquenil medication for arthritis Metoprolol oral tablet can interact with other medications, vitamins, or herbs you may be taking. An interaction is when a substance changes the way a drug works. Metoprolol Side Effects, Dosage, Uses, and More. Plaquenil Uses, Dosage & Side Effects -. Can I take atenolol and metoprolol together.. WebMD provides information about interactions between Plaquenil Oral and selected-cyp2d6-inhibitors-metoprolol. know that you are taking these medicines together. Let your doctor know if you. When phenothiazine medications, certain beta blockers, or certain parasite medicines are taken together with Plaquenil, interactions can occur that may affect the drug levels in your blood. This could increase your risk for side effects or decrease the effectiveness of the medicines. In rare cases, Plaquenil can cause cardiomyopathy, a chronic disease of the heart muscle. If you're taking Plaquenil for an autoimmune condition, your symptoms should begin to improve after a few.