Poloxamer 335 P105 is block polymer of polyoxyethylene and polyoxypropylene with average molecular mass of 6500. Poloxamer 335 P105 exhibits antimicrobial activity, that inihibits 86% Mycobacterium avium complex at concentration of 1 mg/mL. Poloxamer 334 P104 exhibits muscular toxicity. Poloxamer 334 P104 forms thermoreversible hydrogel, that is utilized in food additives, drug delivery carriers in cosmetics, pharmaceutical ingredients and tissue engineering^[1][2][3].