Calventra M Tablet is used to keep bones and nerves healthy, as well as to treat acid indigestion, heartburn, sour stomach, upset stomach, Vitamin D deficiency, eye and ear wash, skin infection, and more. Calventra M Tablet can be taken with or without food. To get the most out of it, take it on a daily basis at the same time. Do not break, chew, or crush it; instead, take it as a whole. Depending on the severity of your ailment, your doctor will determine the doses you require. Eating a well-balanced diet rich in folic acid, iron, vitamins, and minerals may be beneficial.