Thiamine, also known as vitamin B1, is an essential micronutrient from the group of B vitamins. Thiamine plays a key role in intracellular glucose metabolism and contributes significantly to the body's ability to convert carbohydrates and fat into energy. It is essential for normal growth and development and helps maintain the function of the heart and the nervous and digestive systems. Thiamine is not stored by the body, so its requirements are always obtained directly from food. It is found mainly in whole grain products, legumes and in meat and fish.
Thiamine was first discovered by Umetaro Suzuki in Japan while studying beriberi patients.