Acidity can be caused by many problems. It can occur naturally after eating a full meal or due to some underlying diseases like GERD (Gastro intestinal reflux disease), gastric ulcers, etc. In Ayurveda, acidity is caused by pitta aggregation in body. Pitta dosha is responsible for generation on excessive heat in the body, sour belching, emotional outbursts, skin diseases and many such problems. So, The treatment line is usually based on Pitta-hara therapies like Virechana (detox through medically induced purgation), Ayurvedic Pitta- hara medicines and changes in lifestyle and food habits. Make sure to always consult an Ayurvedic physician before taking Ayurvedic medicines .