Eritel-CH 40 LS Tablet contains two medications, both of which help to control high blood pressure. Lowering blood pressure helps to reduce your risk of having a heart attack or a stroke in the future. You can take Eritel-CH 40 LS Tablet with or without food. The dose will depend on your condition and how your respond to the medication. Try to take it at the same time each day. It is important to keep taking this medication until your doctor tells you not to. It contains a diuretic (water pill) and will make you urinate more so, it is best to avoid taking this medication within four hours of going to bed. Use this medication regularly to get the most benefit from it even if you feel well. High blood pressure does not usually have symptoms and if you stop taking it your risk of heart attack or stroke may increase.