Poloxamer 333 P103 is block polymer of polyoxyethylene and polyoxypropylene with average molecular mass of 4950. Poloxamer 333 P103 exhibits antimicrobial activity, that inihibits 90% Mycobacterium avium complex at concentration of 1 mg/mL. Poloxamer 333 P103 forms thermoreversible hydrogel, that is utilized in food additives, drug delivery carriers in cosmetics, pharmaceutical ingredients and tissue engineering^[1][2].