9. How Does Metformin Increase the Risk of Vitamin B1 Deficiency?

Metformin is the most commonly used drug for type 2 diabetes in the world.  Unfortunately, metformin has also been shown to inhibit the absorption of vitamin B1 from the intestines.  So, in addition to the excessive loss of vitamin B1 through urination–as is the case in diabetics– the use of metformin puts diabetics at even greater risk […]