Disclaimer Claims based on traditional homeopathic practice, not accepted medical evidence. Not FDA evaluated. Homeopathic Dilutions What does the ā€œCā€ listed after the active ingredient stand for? The most common type of dilutions is ā€œCā€ dilutions (centesimal dilutions). The 1C is obtained by mixing 1 part of the Mother Tincture with 9 parts of ethanol