Malaria is common in areas such as Africa, South America, and Southern Asia. This medicine is not effective against all strains of malaria. What happens if you double doses of plaquenil North pharmaceuticals makers of hydroxychloroquine Does plaquenil work Hydroxychloroquine 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. Hydroxychloroquine is usually taken with food or milk to prevent stomach upset. The dosage and length of treatment are based on your medical condition and response to therapy. In children, dosage. Hydroxychloroquine can damage the retina of the eye. This can lead to blindness. This problem is most common when high doses are taken for a long time. If you will be taking hydroxychloroquine for a while, it is recommended to have a thorough eye exam before starting it and every three months while taking it. Hydroxychloroquine may also be used for purposes not listed in this medication guide. Hydroxychloroquine is also used to treat symptoms of rheumatoid arthritis and discoid or systemic lupus erythematosus. Can you take hydroxychloroquine sulfate if youre allergic to.sulfa How good is Hydroxychloroquine, and any side. - HealthUnlocked, Hydroxychloroquine SULFATE - Can you bill a plaquenil exam under visionLexapro and plaquenilIcd 10 high risk medication plaquenilPlaquenil maculopathy dose If you are allergic to sulfa drugs does this mean you can't take plaquenil? Support Forums. But the doc said that they cannot give her plaquenil because she is allergic to sulfa drugs. Is this right? I didn't think it had sulphur in it. I have been allergic to sulfa meds for over 30 years. If you are allergic to sulfa drugs does this mean you can.. Precautions and Warnings With Hydroxychloroquine. Rheumatoid Arthritis Drug Treatments Pros and Cons.. Feb 17, 2009 I just wanted to let you know that I am highly allergic to sulfa drugs and have been on plaquenil for almost 8 years with no problems at all. I did accidentally take a sulfa drug about 5 years ago and still had the horrible reaction so know I'm still allergic even while being on plaquenil. I can say, however, that I have not had any cross allergic reaction to other drugs sometimes associated with sulfa allergies. Whether you try Plaquenil or not is ultimately up to you and your doctor, but a lot will depend on the type and severity of reactions that you've had. Rashes are certainly a lot less severe than respiratory reactions. Avoid taking an antacid or Kaopectate kaolin-pectin within 4 hours before or after you take hydroxychloroquine. Some antacids can make it harder for your body to absorb hydroxychloroquine. What other drugs will affect hydroxychloroquine Plaquenil, Plaquenil Sulfate, Quineprox? Hydroxychloroquine can cause serious liver or heart problems.