Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take chloroquine with all of your drugs and health problems. Hydroxychloroquine and smoking Plaquenil bull's eye maculopathy Chloroquine maculopathy screening Plaquenil walmart prices General antimicrobial mechanism of action of chloroquine. Chloroquine accumulates in very high concentrations in the parasite food vacuole Geary et al. 1986. Once in the food vacuole, chloroquine is thought to inhibit the detoxification of heme. Chloroquine becomes protonated to CQ 2+ because the digestive vacuole is acidic pH 4.7 Chloroquine has a negative inotropic action, inhibits spontaneous diastolic depolarization, slows conduction, lengthens the effective refractory period and raises the electrical threshold. This results in depression of contractility, impairment of conductivity, decrease of excitability, but with possible abnormal stimulus re-entry mechanism. Chloroquine is the drug of choice in the few malaria-endemic areas free of CRPf. Combining chloroquine and proguanil is an option for CRPf when other first-line antimalarials are contraindicated. Dosage should be calculated in terms of the base. The adult chloroquine dose is 300 mg base weekly or in some countries 100 mg base daily. For all uses of chloroquine: WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Do not start, stop, or change the dose of any drug without checking with your doctor. What is the mechanism of action of chloroquine Chloroquine Modes of action of an undervalued drug., Chloroquine C18H26ClN3 - PubChem Plaquenil and foul smelling urineHydroxychloroquine pericarditisChloroquine sensitive areasHydroxychloroquine in chikungunyaPlaquenil drinking alcohol Chloroquine enters the red blood cell, inhibiting the parasite cell and digestive vacuole by simple diffusion. Chloroquine then becomes protonated to CQ2+, as the digestive vacuole is known to be acidic pH 4.7; chloroquine then cannot leave by diffusion. Chloroquine - Wikipedia. Chloroquine - an overview ScienceDirect Topics. Mechanisms of action of hydroxychloroquine and chloroquine.. Mechanism of action of chloroquine. Entry into the parasitized RBCs; 1. Accumulation in food vacuole of the parasite- role of pH gradient chloroquine trapping Affects asexual cycle of plasmodium specie. Once administered, it has to enter site of action. It rapidly enters and gets concentrated in food vacuole, present within erythrocytes. Two mechanisms are thought to be involved in chloroquine accumulation into the P. falciparum vacuole acidic trapping due to low vacuolar pH and chloroquine binding to heme or heme related species. It is reasonable to assume that PfCRT does not directly affect the molecular mechanism of chloroquine-HM binding. It is caused by protozoan parasites belonging to the Plasmodium genus and transmitted by an infected female Anopheles mosquito. This disease affects mainly children aged less than 5 years. Among the four species of malarial parasite which infect humans.