The study was aimed at the investigation of “test” (6 days) and longer-term (8 weeks) acarbose treatment effects on plasma uric acid (UA) concentration in patients with metabolic syndrome (MS). Material and methods. In total, 33 men with MS and carbohydrate metabolism disturbances were administered 6-day “test” acarbose therapy. At baseline and 7 days later, saccharose tolerance test was performed, with the measurement of venous plasma levels of fasting UA, fasting fructose, glucose (fasting, 60 and 120 minutes after saccharose load), and insulin (fasting and 120 minutes after the load). 4 weeks later, 20 patients were administered 8-week acarbose therapy, with standard gradual dose increase. At baseline and after the treatment, venous plasma concentrations of UA and fructose were measured. Results. Hyperfructosemia was observed in 100% of the patients, with mean plasma fructose concentration of 0,82±0,97 mmol/l. Hyperuricemia was observed in 51,5% (n=17), with mean plasma UA concentration of 413,2±86,5 mmol/l. Six-week acarbose therapy resulted in a significant decrease of UA levels (p=0,0015) and fructose levels (p=0,049), as well as in postprandial levels of glucose (p=0,03) and insulin (p=0,013). Eight-week acarbose therapy was associated with mean decrease of plasma UA concentration by 5,8% (p=0,04), but no significant changes in fasting plasma levels of fructose (p>0,05).