Therapy of chronic pain syndrome and adequate perioperative pain management during treatment of malignant neoplasms are important problems at the current stage of clinical medicine development. Currently, multimodal pain management is effectively applied through drugs of various pharmacological groups prescribed depending on pain intensity in accordance with a digital rating scale. Associated adverse events as well as impossibility of using peroral or transdermal forms in some cases, limit the use of opioid analgesics. High bioavailability and fast absorption of μ1-opioid receptor agonist tafalgin shown during preclinical studies, relatively favorable safety profile allowed to use this drug in oncological clinic.An experience of using tafalgin in treatment of pain syndrome in patients with malignant tumors at the “Lapino” clinical hospital since 2022 is presented. The effectiveness of the drug is evaluated, and its niche in multimodal pain management is determined.