Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur while taking hydroxychloroquine: Incidence not known Some side effects of hydroxychloroquine may occur that usually do not need medical attention. What drug is similiar to plaquenil Can hydroxychloroquine cause sexual dysfunction Hydroxychloroquine is dispensed as 200 mg tablets, which is equivalent to 155 mg of the base. Hydroxychloroquine should be taken with a meal or a glass of milk to minimise the gastrointestinal side effects. Alternate-day dosing can be used. Mechanism of action of hydroxychloroquine as an antirheumatic drug. Fox RI1. Author information 1Department of Rheumatology, Scripps Clinic and Research Foundation, La Jolla, CA 92037. The antimalarial agents chloroquine and hydroxychloroquine have been used widely for the treatment of rheumatoid arthritis and systemic lupus erythematosus. Hydroxychloroquine is a well-tolerated medication for various rheumatologic and dermatologic conditions. Its main side effects are gastrointestinal upset, skin rash, headache, and ocular toxicity1. Within the eye, hydroxychloroquine can adversely impact the cornea, ciliary body, and retina1 Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. These side effects may go away during treatment as your body adjusts to the medicine. Hydroxychloroquine mide Chloroquine & Hydroxychloroquine supporting chemo., Mechanism of action of hydroxychloroquine as an antirheumatic. Chloroquine 500 mg buy onlineWhat type of arthritis is plaquenil prescribed for Hydroxychloroquine slightly increases the pH inside the macrophage lysosomes, which alters the processing of peptide antigens and reduces their subsequent presentation on the cell surface. Thus the interaction between T-helper cells and antigen-presenting macrophages responsible for joint inflammation is reduced, with a reduction in the inflammatory response. Hydroxychloroquine - an overview ScienceDirect Topics. Hydroxychloroquine toxicity - EyeWiki. Hydroxychloroquine Plaquenil Side Effects & Dosage for.. The antimalarial agents chloroquine and hydroxychloroquine have been used widely for the treatment of rheumatoid arthritis and systemic lupus erythematosus. These compounds lead to improvement of clinical and laboratory parameters, but their slow onset of action distinguishes them from glucocorticoids and nonsteroidal antiinflammatory agents. Hydroxychloroquine Plaquenil is considered a disease-modifying anti-rheumatic drug DMARD. It can decrease the pain and swelling of arthritis. It may prevent joint damage and reduce the risk of long-term disability. The precise mechanism by which hydroxychloroquine exhibits activity against Plasmodium is not known. Hydroxychloroquine, like chloroquine, is a weak base and may exert its effect by concentrating in the acid vesicles of the parasite and by inhibiting polymerization of heme. It can also inhibit certain enzymes by its interaction with DNA.