Dear friend, The active ingredients of COREX are chlorpheniramine maleate and codeine phosphate. Codeine is habit forming and has led to millions being addicted in India and Bangladesh, with many reported deaths.. Faced with large scale addiction to codeine containing cough syrups, Bangldesh banned this and brought in death penalty for possession of Corex above 2 litre. Smuggling from India through Tripura border is rampant with regular seizures by police, BSF. Corex has been banned in India from March 2016. Legally, Corex can only be obtained by a physician s prescription, but studies show that more than 90% of the product is sold without one. The majority of the sale of Corex are people of are addicted to it in India. Police in different states has been conducting regular raids, seizures and criminal cases against chemist stores, pharmacies and stockists who keep diverting Corex for sale to addicts. Corex is not generally a fatal drug substitute, unless taken in extremely high quantities. However, many side effects are common. It can cause short term memory loss, sleeplessness, tremors and spasms, muscular pains and dehydration. Long term abuse leads to serious kidney damage or constipation. Corex also has a high sugar content, and may be risky for acute diabetic patients. You must stop using it right away, as it is illegal and dangerous. While the withdrawal symptoms alone are not typically life-threatening, there’s always a chance that symptoms will get worse. For example, if not treated properly, dehydration can lead to dangerous and sometimes fatal health complications. It’s best to err on the side of caution and find a medical detox program.