Pabrinex is a prescription medication primarily used to prevent and treat vitamin B1 (thiamine) deficiency, which can lead to conditions such as Wernicke-Korsakoff syndrome, a serious brain disorder often associated with excessive alcohol consumption. It is also used in other situations where there is a risk of vitamin B1 deficiency or when the body's demand for vitamin B1 increases. Pabrinex is administered intravenously or intramuscularly and contains high doses of vitamin B1 along with other B vitamins, including vitamin B2 (riboflavin), vitamin B3 (niacin), and vitamin B6 (pyridoxine), to support overall health and well-being. This combination of B vitamins helps to ensure rapid correction of thiamine deficiency, support nervous system function, and aid in the metabolism of carbohydrates, fats, and proteins.