Vitamin B1 is a water-soluble vitamin and a coenzyme. Vitamin B1 can promote the synthesis of cell membranes of human nerve cells, treat neuritis caused by vitamin B1 deficiency, and can also be used to treat trigeminal neuralgia, sciatica and herpes zoster. Vitamin B1 can also increase the peristalsis of the gastrointestinal tract, promote the secretion of gastric acid, improve appetite, and treat indigestion and constipation. Vitamin B1 can increase muscle strength, reduce muscle soreness, improve movement disorders, and relieve fatigue. Vitamin B1 can increase the contraction of the heart muscle and improve the energy supply of the heart.