Tag: Thiamin side effects

According to MedlinePlus, while thiamin is generally safe, it can cause some side effects, though they are not common. This comprehensive guide explores what are the side effects of thiamin, detailing both mild symptoms and more serious concerns, as well as situations that may increase risk.

Health authorities, including the Food and Nutrition Board, have not established a Tolerable Upper Intake Level (UL) for oral thiamin because there is no evidence of adverse effects from high dietary or supplemental intake. This makes the question of "how much thiamin is too much?" less about toxicity for most people and more about understanding the body's natural processes.