Causticum 30 CH (Diluted Pills)Causticum (Dilution) Obtained by distilling a mixture of slaked lime and a solution of potassium sulfate. Common Name: Potassium Hydrate. Causes & Symptoms for Causticum The leading feature of the Causticum effects is in voluntary and involuntary muscles. Neuralgic affections are also common with this remedy and are generally of an obstinate character. Causticum is useful in rock sensation in the body whether it is the throat, chest stomach, abdomen,