It regulates the activity of the immune system, which may be overactive in some conditions. Hydroxychloroquine can modify the underlying disease process, rather than simply treating the symptoms. Chloroquine pharmacodynamics Prednisone and hydroxychloroquine interaction Hydroxychloroquine Plaquenil is a drug that is classified as an anti-malarial drug. Plaquenil is prescribed for the treatment or prevention of malaria. It is also prescribed for the treatment of rheumatoid arthritis, lupus, and the side effects of lupus such as hair loss, joint pain, and more. Side effects, drug interactions, pregnancy safety. Chloroquine can be used to kill malaria parasites living in red blood cells. Side effects of hydroxychloroquine may include headache. Vomiting may be a side effect of chloroquine use. Both hydorxychloroquine and chloroquine are traditionally used as medication to treat or prevent malaria. When the difference between pK a and pH is more than 1.0 log unit, subtraction of this difference from log P will furnish log D.31 This makes it possible to calculate32 log D from a knowledge of log P, pK a and pH. The ClogP program33 provides a useful method of computing approximate log P values for compounds of known structure. Hydroxychloroquine is often taken in combination with other drugs such as methotrexate. Over the long term hydroxychloroquine can reduce pain, swelling and joint stiffness. It may be as long as 12 weeks before you notice the benefits. Difference between quinoric and plaquenil Plaquenil or hydroxychloroquine sulfate? Which has been., What Is the Difference between Hydroxychloroquine and. Stopping plaquenil Hydroxychloroquine HCQ, sold under the brand name Plaquenil among others, is a medication used for the prevention and treatment of certain types of malaria. Specifically it is used for chloroquine-sensitive malaria. Other uses include treatment of rheumatoid arthritis, lupus, and porphyria cutanea tarda. It is taken by mouth. Hydroxychloroquine - Wikipedia. Hydroxychloroquine is much less active than chloroquine.. What's the difference between quinoric and hydorc.. Find patient medical information for Hydroxychloroquine Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Compare Hydroxychloroquine vs. Plaquenil, which is better for uses like Lupus, RA and Malaria. Compare head-to-head ratings, side effects, warnings, dosages, interactions and patient reviews. Confused Would appreciate any information you may have on the difference between these two RX's. Anyone taken the latter? Thanks.carole - Hi ! I have been taking Quinacrine for about 5 years now along with first Plaquenil and then Aralen.