Plaquenil is the brand name for the generic drug Hydroxychloroquine which is manufactured by Sanofi-Aventis. It is available in 200 mg tablets.
This drug is prescribed in the treatment of rheumatoid arthritis though it is primarily an anti-malaria drug. In rheumatoid arthritis, it is very often used when other therapies and drugs do not give the desired results.
Action
How this medication works is not exactly clear but it does seem to prevent inflammation and this is how it relieves the pain and swelling of rheumatoid arthritis. In malaria, it seems to prevent the malaria parasites from breaking down the hemoglobin in the RBCs or red blood cells.
Side Effects
There could be side effects when this medication is being taken. Some of the ones to look out for are skin rash and itching, nausea, vomiting and dizziness, headache, muscle ache and cramps, tiredness and weakness, swellings and even shortness of breath. There could be more serious side effects like anemia, a decrease in white blood cells, vision impairment like color blindness and blurred vision or even loss of sight. In psoriasis patients, this drug could make the symptoms worse so it must be given with caution and the person must be monitored closely.
Caution
You need to inform your doctor about all the medications that you are on to prevent the occurrence of drug interactions as well as all the ailments you have or might have had. You need to definitely tell him if you suffer from psoriasis, any kidney or liver disorders, any kind of allergy or any eye complaints. In all probability, your doctor will ask you to go through an examination to make sure that you can take this drug with no problem. Eye tests are a must three or four times a year when you are on this medication so that in case of any retinal damage, the medication can be stopped. The elderly will have to be monitored closely when they take this drug. Any change from the normal must be reported to the doctor as soon as possible because in the case of allergies, things could get serious very quickly.
Contraindications
The drug is contraindicated in anyone with macular ailments of the eye, people who are allergic to this type of drugs, children who are below six and in women who are expecting a baby or nursing a baby. It should ideally be avoided in people with liver and kidney problems as well as the very old.

