Effects of Paraprobiotic <i>Limosilactobacillus fermentum</i> HDB1098 on Hangover Improvement in Humans: A Randomized Double-Blind Placebo-Controlled Crossover Clinical Trial

Hangover refers to various mental and physical side effects following alcohol consumption. This study investigated the efficacy of paraprobiotic <i>Limosilactobacillus fermentum</i> HDB1098 (MB-LFH1098, Pharmavio ALC) on improving hangover symptoms and was designed as a randomized double-blind crossover placebo-controlled clinical trial conducted with 28 participants. Participants consumed 42.8% whiskey with equivalent to 90 g of alcohol and serum alcohol and acetaldehyde levels were measured at 0, 0.25, 0.5, 1, 2, 4, 6, and 15 h after alcohol consumption. Both serum alcohol (<i>p</i> < 0.01) and acetaldehyde (<i>p</i> < 0.05) levels over time, AUC, C_max, and T_max for serum acetaldehyde level were significantly lower (<i>p</i> < 0.05) in the HDB1098 group compared to the placebo group. Furthermore, the total scores of AHS and AHSS were significantly lower (<i>p</i> < 0.0001) in the HDB1098 group than the placebo group, with improvement of several indicators in each questionnaire. These findings indicate that HDB1098 administration can effectively contribute to relief of hangover symptoms.