Thiamine, or vitamin B1, helps our body with the transformation of nutrients such as carbohydrates, proteins and fats into the energy that our body needs. We can become deficient in thiamine if our diet does not contain foods with naturally high levels of vitamin B1, such as fish, peas, pulses, whole grains and lean cuts of meat. Thiamine deficiency can lead to fatigue, poor appetite, disrupted digestion and constipation. Allithiamine contains a form of thiamine/vitamin B1 which naturally occurs in garlic. It supports healthy function of the skeletal, muscular and energy systems, while also promoting proper functioning of the heart, brain and cardiovascular system.