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AIM: To evaluate the efficacy of amantadine plus interferon-alpha and ribavirin in non-responder patients with chronic hepatitis C. METHODS: Twenty-six non-responder patients received the regimen of IFN-α-2a at a dose of 6 million units three times a week, 1 000-1 200 mg of ribavirin daily, and 200 mg of amantadine daily in divided doses over 48 wk. After the end of treatment, at the 72nd wk, a sustained viral response rate was determined. RESULTS: An early (after 12 wk of therapy) response was seen in 34.6% (9/26) of patients. Response rate at the 24th wk was 42.3% (11/26). End of treatment response (ETR) was 53.8% (14/26). Sustained viral response (SVR) was 42.3% (11/26). There was a statistically significant difference between 0 and 12 wk (P= 0.04), 0 and 24 wk (P= 0.01), 0 and 48 wk (P= 0.00), and 0 and 72 wk (P= 0.001). No patient had severe adverse effects during the treatment. CONCLUSION: Combination regimen of interferon-α, ribavirin and amantadine can enhance sustained viral response on IFN-α and ribavirin non-responder patients with HCV. Triple therapy with amantadine should be evaluated in further studies.
AIM: To evaluate the efficacy of amantadine plus interferon-alpha and ribavirin in non-responder patients with chronic hepatitis C. METHODS: Twenty-six non-responder patients received the regimen of IFN-α-2a at a dose of 6 million units three times a week, 1 000-1 200 mg of ribavirin daily, and 200 mg of amantadine daily in divided doses over 48 wk. After the end of treatment, at 72nd wk, Response rate at the 24th wk was 42.3% (11/26). End of treatment response (ETR) was 53.8% (14/26 There was a significant difference between 0 and 12 wk (P = 0.04), 0 and 24 wk (P = 0.01), 0 and 48 wk (P = 0.00), and 0 and 72 wk (P = 0.001). No patient had severe adverse effects during the treatment. CONCLUSION: Combination regimen of interferon-α, ribavirin and amantadine can enhance sustained viral response on IFN-α and ribavirin non-responder patients with HCV. Triple therapy with amantadine should be evaluated in further studies.