Poloxamer 181 L61 is block polymer of polyoxyethylene and polyoxypropylene with average molecular mass of 2000. Poloxamer 181 L61 exhibits antimicrobial activity, that inihibits 91% Mycobacterium avium complex at concentration of 1 mg/mL. Poloxamer 181 L61 forms thermoreversible hydrogel, that is utilized in food additives, drug delivery carriers in cosmetics, pharmaceutical ingredients and tissue engineering^[1][2].