Vitamin B1 Thiamine Vitamin B1 belongs to the B1 to B12 groups, which we refer to collectively as the B complex. All vitamins in this group should be supplemented under this name. But do I only need one of them? You need the whole group – the most important vitamins from the B group can be obtained separately. The B vitamins were discovered in 191 by Casimir Funk, who introduced the word "vitamin", which we use so often today. B1 - thiamine (or aneurine) is water-soluble and sensitive to heat. It maintains oxygen levels in the blood and is important for sugar metabolism. It also contributes to the proper functioning of the nervous system, emphasises and supports heart health. It also has a very beneficial effect against fatigue. Its increased intake is recommended for nicotine, arsenic or lead poisoning. If you tell yourself that you have no way to get such a poisoning, you can have a reduced amount of it even if you drink tea or coffee often and a lot. Both contain the substance tannin, which causes the