Abstract 594011 Diclosed is Deoxyactagardine B (7-amino-1-heptylamide monocarboxarnide), and pharmaceutically acceptable salts, hydrates and solvates thereof.suitable for use in the treatment of microbial infections, for example Clostridium infection, such as C. perfringens, C. difficile, C.tetani, and/or C. botulinum, in particular C. difficile, especially infection of the colon and/or lower intestines and diarrhea associated with the microbial infection.