Thiamine and Folic Acid Supplementation in Alcoholism

Mechanisms of Deficiency in Alcoholism

Chronic alcohol consumption leads to poor dietary intake due to substituting alcohol for food, and decreased nutrient absorption and enhanced excretion of trace elements, according to the Clinical Nutrition guidelines 1

Thiamine deficiency is extremely common in alcohol-dependent individuals, with 30-80% showing clinical or biological signs of deficiency, as reported by the Liver International guidelines 2
Thiamine deficiency can lead to Wernicke's encephalopathy and Korsakoff psychosis, which are serious neurological complications, as stated in the Clinical Nutrition guidelines 1
Thiamine should be administered as part of the alcohol withdrawal process to prevent Wernicke's encephalopathy, according to the Liver International guidelines 2

Adequate folate supplementation should be provided along with other micronutrients as part of comprehensive nutritional therapy, as recommended by the Clinical and Molecular Hepatology and Hepatology guidelines 3, 4

Patients with alcoholic liver disease should receive protein at 1.2-1.5 g/kg/day, calories at 35-40 kcal/kg/day, and carbohydrates at 2-3 g/kg/day, as recommended by the Clinical and Molecular Hepatology guidelines 3, 5
Sodium restriction to less than 5 g/day of salt intake is recommended, as stated in the Clinical and Molecular Hepatology guidelines 5
Frequent interval feedings with emphasis on nighttime snack and morning feeding can improve nitrogen balance, according to the Hepatology guidelines 4, 6

Nutritional assessment should be performed in all patients with alcoholic liver disease, as recommended by the Hepatology guidelines 4, 6
Oral supplementation is preferred when possible, but enteral or parenteral nutrition may be necessary in severe cases, as stated in the Clinical Nutrition and Hepatology guidelines 1, 4
Abstinence from alcohol is crucial and improves liver fibrosis, lowers portal pressure, and enhances effectiveness of nutritional therapy, according to the Clinical and Molecular Hepatology guidelines 5

Patients with alcoholism often require supplementation of vitamin B6, vitamin B12, vitamin A, and vitamin D, as recommended by the Clinical and Molecular Hepatology and Journal of Hepatology guidelines 3, 7
Zinc supplementation can improve ascites and encephalopathy, and should be provided at a ratio of 8-15 mg zinc for each 1 mg copper to avoid zinc-induced copper deficiency, as stated in the Clinical and Molecular Hepatology and Obesity Reviews guidelines 5, 9