Hydroxychloroquine is available as the brand-name drug Plaquenil. Generic drugs usually cost less than the brand-name version. Hydroxychloroquine may be used as part of a combination therapy. Increasing plaquenil dose Chloroquine phosphate vet Take hydroxychloroquine with a meal or a glass of milk. To prevent malaria Start taking the medicine 2 weeks before entering an area where malaria is common. Continue taking the medicine. Plaquenil hydroxychloroquine belongs to a group of medicines called quinolines. 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. The recommended initial dosage of hydroxychloroquine Plaquenil for the treatment of lupus erythematosus is 400 mg once or twice daily. The recommended maintenance dose range of hydroxychloroquine Plaquenil for the treatment of lupus erythematosus is 200 to 400 mg daily. Hydroxychloroquine is used to treat lupus erythematosus and rheumatoid arthritis. It isn’t fully understood how this drug works to treat lupus erythematosus or rheumatoid arthritis. That means you may need to take it with other drugs. It treats malaria by killing the parasites that cause the disease. Taking too much hydroxychloroquine Hydroxychloroquine Side Effects, Dosage, Uses, and More, Plaquenil Uses, Dosage & Side Effects - Chloroquine inhibits autophagic flux by decreasing autophagosome lysosome fusionPlaquenil cervical cancer risk If you take too much hydroxychloroquine, you may experience headaches, drowsiness, visual disturbances or fits. These symptoms may occur within 30 minutes of overdose. While you are taking this. Chemmart Hydroxychloroquine hydroxychloroquine sulfate.. Plaquenil - Side Effects, Uses, Dosage, Overdose.. RA and Hydroxychloroquine How Effective is it for.. Taking hydroxychloroquine long-term or at high doses may cause irreversible damage to the retina of your eye. Stop taking hydroxychloroquine and call your doctor at once if you have trouble focusing, if you see light streaks or flashes in your vision, or if you notice any swelling or color changes in your eyes. Hydroxychloroquine comes in an oral tablet. Adult dosing ranges from 200 mg or 400 mg per day 6.5mg/kg. In some cases, higher doses can be used. It is recommended one tablet twice daily if taking more than one tablet. It is recommended to be taken with food. Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.