Martin Pleasance Tissue Salts Comb C Acidity 125T. Sufferers from indigestion or dyspepsia will know all about the consequent uncomfortable symptoms. It can be acidity caused by over production of stomach acid, or heartburn caused by reflux of stomach acid. Combination C is designed to help with these symptoms either individually or combined. Tissue Salts are micro doses of minerals that help rectify mineral imbalances which may be the cause of many common ailments. Tissue Salts may assist the absorption of nutrients from food and supplements. This combination of Schuessler Tissue Salts, in an easy to digest tablet, acts to balance out acidity levels, targeting heartburn, reflux, dyspepsia and general digestive issue.