Source Naturals B-1 High Potency 500mg with Mag, 50 Tablets Package Quantity:1 B-1 is intimately involved in many aspects of nerve health and function. The active co-enzyme form of B-1, thiamin pyrophosphate (TPP), is necessary for energy production and essential for the formation of acetylcholine, a major neurotransmitter. Magnesium plays a role in neuromuscular transmission and activity, promoting muscle relaxation. A highly processed "junk food" diet, excessive alcohol intake, and exhaustive exercise may increase the need for B-1. Features: Naturopathic Medicine Combining herbs, nutrients, nutraceuticals in one formulation. Source Naturals Bio-Aligned Formulas are formulations with potent bio-active nutrients that go deep to the root causes of health imbalances and become powerful tools for vibrant health and well being. Product Details: Product Dimensions: 2 x 2 x 3.5 inches ; 2.88 ounces Shipping Weight: 3.2 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More UPC: 689076039710 021078008873 Item model number: SN0887