Chloroquine has been extensively used in mass drug administrations, which may have contributed to the emergence and spread of resistance. It is recommended to check if chloroquine is still effective in the region prior to using it. Plaquenil dose toxicity Hydroxychloroquine and bloating Getting off hydroxychloroquine Plaquenil long term use Chloroquine Aralen is used for preventing and treating malaria and amebiasis, an infection of the intestines caused by a parasite. Chloroquine binds to heme or FP to form what is known as the FP-Chloroquine complex; this complex is highly toxic to the cell and disrupts membrane function. Action of the toxic FP-Chloroquine and FP results in cell lysis and ultimately parasite cell autodigestion. In essence, the parasite cell drowns in its own metabolic products. The risk may also be higher with some doses of chloroquine, if you use chloroquine for longer than 5 years, or if you take certain other drugs like tamoxifen. Call your doctor right away if you have any eyesight changes like blurred or foggy eyesight, trouble focusing or reading, or trouble seeing in dim light. The Centers for Disease Control and Prevention recommend against treatment of malaria with chloroquine alone due to more effective combinations. In areas where resistance is present, other antimalarials, such as mefloquine or atovaquone, may be used instead. Chloroquine drug action Hydroxychloroquine Side Effects, Dosage, Uses, and More, Chloroquine C18H26ClN3 - PubChem Hydroxychloroquine inr Plaquenil is the brand name for the prescription drug hydroxychloroquine. It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Plaquenil Hydroxychloroquine - Side Effects, Dosage.. Chloroquine Indications, Side Effects, Warnings -. Plaquenil Uses, Dosage & Side Effects -. 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. Drug interactions Antacids - may reduce absorption of chloroquine. Kaolin - may reduce absorption of chloroquine. Cimetidine - may inhibit metabolism of chloroquine; increasing levels of chloroquine in the body. Ampicillin - levels may be reduced by chloroquine. Cyclosporine - levels may be. Chloroquine/hydroxychloroquine is extruded to the extracellular medium mostly by exocytosis and/or through the action of the multidrug resistance protein MRP-1, a cell surface drug transporter belonging to the ATP-binding cassette family, which also includes the more thoroughly studied P-glycoprotein.