high strength thiamin,easy to absorb nutrient in small vegetarian & vegan capsules,clinical nutrition grade nutrient,manufactured to gmp standardsvitamin b1 is found in whole grains, meat, and pulses. refining of foods tends to deplete the level of vitamin b1, with brown rice having many times more of this vitamin than white rice. in the body it is mainly found in skeletal muscle, brain, heart muscle, kidney and liver. it plays a crucial part in energy release from food and carbohydrate metabolism and because it cannot be stored in the body, a regular amount is required from the diet to maintain health. as a consequence, those with high carbohydrate intakes including sugar and alcohol require higher levels of vitamin b1.this is a high strength supplement that provides clinical nutrition grade thiamin in a form that is known to be well absorbed, and which can be taken on a long term basis. however, we believe that few people will be deficient in just a single b vitamin, and therefore it is sensible to consider a b complex for longer term use.