| 要約: | Abstract Background Muscle cramps are among the common debilitating complications of liver cirrhosis. Since this complication lacks effective treatments, we aimed to evaluate the effectiveness of L-carnitine supplementation in reducing the frequency, duration, and severity of muscle cramps in patients with liver cirrhosis. Methods The present retrospective cohort was conducted on adult patients referred between November 2022 and December 2023 to a tertiary referral hospital in Shiraz, Iran. Patients with confirmed liver cirrhosis who had muscle cramps ≥ 4 times per month without other secondary etiologies for muscle cramps were evaluated for inclusion. They were included if they had taken an oral L-carnitine supplement of 1000 mg/day for one month and had available medical records of the assessment of their cramps before and one month after starting the supplement. Results From the 702 patients screened, 195 (27.8%) had muscle cramps, and 91 (13.0%) met the inclusion criteria. The respective median age and cirrhosis duration (interquartile range (IQR)) of the included patients were 61.0 (16.0) and 2.0 (3.0) years, and 48 (53%) were male. Median daily, weekly, and monthly cramp frequency and severity were higher in females (P-values < 0.05). We noted reduced daily, weekly, and monthly frequency of the cramps, their severity, and their mean duration following L-carnitine supplementation (respective median (IQR) of absolute percentage change: 100 (100.0), 60 (88.33), 50 (75.0), 50 (77.5), and 40.0 (44.58); P-values < 0.001). Additionally, daily, weekly, and monthly cramps completely resolved in 29 (31.9%), 21 (23.1%), and 13 (14.3%) after supplementation. BMI correlated with the percentage change of all the mentioned cramp indices (P-values < 0.05), and age correlated with the percentage change in the monthly frequency of cramps (P-value = 0.042). Changes in cramp indices did not differ significantly between males and females. Conclusions L-carnitine supplementation seems to be a promising therapeutic option for cramps in liver cirrhosis. Further studies with control groups and larger samples are required to confirm this finding.
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