Effects of l-carnitine on frailty status in patients with liver cirrhosis: A randomized-controlled trial

Frailty is a common complication in patients with liver cirrhosis, which is linked with augmented rates of morbidity and mortality. In this regard, timely nutritional assessment and intervention have gained scientific attention. L-carnitine may be a promising candidate with its potential to enhance energy metabolism, reduce inflammation, and act as an antioxidant. Therefore, we aimed to assess the impact of l-carnitine supplementation on frailty status and liver function in adults with liver cirrhosis.

This double-blinded, randomized, controlled clinical trial study enrolled 77 patients with liver cirrhosis. Patients were randomly allocated into two groups: the control group (n = 42) and the l-carnitine group (n = 35). The l-carnitine group received 500 mg of l-carnitine orally three times a day for 8 weeks, while the control group did not receive any intervention.

L-carnitine administration resulted in a significant decrease in alanine transaminase levels (p: 0.043) and partial thromboplastin time (p: 0.036). Furthermore, compared to the control group, l-carnitine treatment led to improvements in prothrombin time (p: 0.008) and international normalized ratio (p: 0.024). However, no significant improvement in the Liver Frailty Index, Freid Frailty Index, and Karnofsky Performance Status Scale (p > 0.05) was observed in the carnitine group after the 8-week intervention period.

In conclusion, the administration of l-carnitine exhibited hepatoprotective properties and was correlated with lowered alanine transaminase levels with improvement in coagulation status in liver cirrhosis patients. Nevertheless, our study indicated that the short-term use of l-carnitine might not significantly improve frailty in these patients.