The role of garlic in hepatopulmonary syndrome: a randomized controlled trial.

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A total of 41 hepatopulmonary syndrome (HPS) patients were randomly assigned to receive either oral garlic supplementation (dose not available) or placebo, and were evaluated monthly over a period of nine to 18 months. After nine months, garlic supplementation was associated with a 24.66% increase in baseline arterial oxygen levels (83.05 mmHg versus 66.62 mmHg; p<0.001), compared with only a 7.37% increase (68.75 mmHg versus 64.05 mmHg; p=0.02) among subjects in the placebo group. There was also a 28.35% decrease in alveolar-arterial oxygen gradient (21.35 mmHg versus 29.77 mmHg; p<0.001) among patients with HPS who received garlic, in contrast with only a 10.73% decrease (29.11 mmHg versus 32.61 mmHg; p=0.12) among those in the placebo group. After nine months, the arterial oxygen level was significantly higher (83.05 mmHg versus 68.75 mmHg; p<0.001) and the alveolar-arterial oxygen gradient was significantly lower (21.35 mmHg versus 29.11 mmHg; p<0.001) among patients receiving garlic compared with those receiving placebo. Reversal of HPS was observed in 14 of 21 patients (66.67%) on garlic supplementation and in one of 20 patients (5%) on placebo. Two of 21 patients undergoing garlic supplementation died during follow-up in contrast to seven of 20 patients who were on placebo. Can J Gastroenterol. 2010 Mar;24(3):183-8. PMID: 20352147.

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