Arquin 250mg Syrup belongs to the class of medications called 'quinoline' primarily used to treat malaria. Arquin 250mg Syrup gives a degree of protection (prophylaxis) against malaria when people travel to areas where malarial cases exist. It is effective against Plasmodium vivax, Plasmodium ovale, and Plasmodium malariae. Arquin 250mg Syrup is not effective against Plasmodium falciparum. Besides this, it also treats amoebiasis (intestinal dysentery) and rheumatic disease (arthritis). 

Arquin 250mg Syrup contains 'chloroquine' which acts by killing the malarial parasites, i.e. Plasmodium and stops the formation of the nontoxic heme metabolite hemozoin by the parasite. Heme part of the red blood cells is broken by the malarial, causing parasites. Arquin 250mg Syrup prevents the breakdown of heme part and is actually toxic to the parasite. It kills the parasitic form living in red blood cells that resides in the liver.

Arquin 250mg Syrup should be taken as prescribed by your doctor. The dose of Arquin 250mg Syrup can vary depending upon your condition and the severity of the infection. The common side effects of Arquin 250mg Syrup include vomiting, nausea, hair loss and itchy skin. Everyone need not experience the above side effects. In case of any discomfort, speak with a doctor.

Before starting Arquin 250mg Syrup, please inform your doctor if you are allergic to chloroquine or have kidney or liver problems. Do not take Arquin 250mg Syrup on your own. Arquin 250mg Syrup is safe to use during pregnancy and breastfeeding. Prolonged use of Arquin 250mg Syrup may have a severe risk on the heart and retina of the eyes leading to pounding heartbeats and permanent vision problems. 

Arquin 250mg Syrup falls into a group of medicines known as antimalarials, indicated for treating or preventing malaria. Arquin 250mg Syrup contains chloroquine, which belongs to quinoline. It works by preventing the formation of the nontoxic heme metabolite hemozoin by the parasite. Due to this, the parasite dies from its own toxic by-products released due to haemoglobin's metabolism. Arquin 250mg Syrup is also indicated for the treatment of rheumatoid arthritis and autoimmune diseases like lupus and intestinal infection caused by amoeba (amoebiasis).

Arquin 250mg Syrup does not respond well against all malaria strains, so consult with your doctor if you do not respond well to Arquin 250mg Syrup. This medicine can affect heart health, especially if a person is taking medications, including the antibiotic azithromycin and anticancer like tamoxifen. An individual must consult with the doctor if they are noticing fast or pounding heartbeats and sudden dizziness. This medicine cannot be used for a long duration as it may cause irreversible damage to the eye that could lead to vision problems. Arquin 250mg Syrup cannot be used in persons who have heart disease, heart rhythm disorder, diabetes, a stomach disorder, an allergy to quinine, liver or kidney disease, psoriasis, alcoholism, porphyria (a genetic enzyme disorder that affects the skin or nervous system), a genetic enzyme deficiency called glucose-6-phosphate dehydrogenase (G6PD) deficiency. Consult with your doctor if you are pregnant or breastfeeding as this medicine could only be used if prescribed by the doctor. 

Do not take Arquin 250mg Syrup if you have had a previous reaction to Arquin 250mg Syrup, or if you have certain eye problems involving your retina. Tell your healthcare provider about any problems you may have with your eyes.