Paracetamolum (PC) after i.p. administration to rats at the therapeutic (100.0 mg/kg) and subtoxic (500.0 mg/kg) doses was shown to induce significant and dose-dependent elevation of the level of malone dialdehyde (MDA) as well as the increase in a certain extent of chemiluminescence (CL) being injected at the higher dose. Acetylsalicylic acid (ASA) at the same doses being injected at the lower one, induced the tendency toward the reduction of MDA level, while at the higher dose the rise of MDA content and CL intensity compared to PC have been observed. PC combination with ASA at therapeutic doses range (50.0 + 50.0 mg/kg) significantly diminished MDA formation, while at subtoxic doses range (250.0 + 250.0 mg/kg) such effect was not detected, although subsequent tendency toward CL intensity reduction was observed. Ascorbinic acid being administered in combination with PC and ASA had no influence on MDA formation but significantly weakened CL intensity when subtoxic doses of indicated drugs were used.
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