Ecological Formulas glandular formulas use freeze dried (lyophilized) concentrates, many paired with vitamin C or other nutrient cofactors. The range includes Cortol ACE adrenal, LTP thymic peptides, Lyophilized Bovine Liver, Mucopolysaccharide Concentrate from trachea, HRF-Thalamic, Placenta Lyophilized and Sphingolin. Consult the label and other product information before use.