sublingual preparation to a warm blooded mammal a representative solid formulation administered sublingually in tablet form can be described utilizing thymosin fraction 5 as the peptide as noted previously thymosin fraction 5 is a complex of peptides that is stable at room temperature the individual component peptides each have a molecular weight of less than 20 000 daltons the wetted mixture is formed into tablets of a desired weight said tablets are then dried at 30 u00b0 c for 36 hrs in use the liquid composition or tablet composition is administered under the tongue of a warm blooded mammal at the appropriately desired dosage the preferred embodiment of the invention is described above in the drawings and description of preferred embodiments while these descriptions directly describe the above embodiments it is understood that those skilled in the art may conceive modifications and or variations to the specific embodiments shown and described herein any such modifications or variations that fall within the purview of this description are intended to be included therein as well unless specifically noted it is the intention of the inventor that the words and phrases in the specification and claims be given the ordinary and accustomed meanings to those of ordinary skill in the applicable art s the foregoing description of a preferred embodiment and best mode of the invention.