Abstract: A formulation to be used for administering a therapeutically effective amount of an antimicrobiologically active monoglyceride to a mammal including administering a pharmaceutical composition having a total volume of 1-5000 ?L to a surface of the mammal such as the nasal, ocular, otal, pharynx, larynx, sinuses, oral cavity, vaginal or dermal surface, the pharmaceutical composition including the therapeutically effective amount of the antimicrobiologically active monoglyceride dissolved or suspended in a volume of 1-5000 ?L of an methoxypolyethylene glycol referred to as mPEG and polyoxyethylene glycol (PEG)-fatty acid mono- or diglyceride so that upon administration of the pharmaceutical composition to the surface the formulation expresses thermostability within the range from below zero degrees C. to above 35-40° C. and thereby allows the antimicrobiologically active monoglyceride to exert its therapeutic effect.