I was diagnosed with type 2 a year ago and I've been taking MetforminER since then. But last month I got metformin and I noticed I have a rash on my hands for around a week and I didn't change anything in my diet. Is that an allergic reaction to this metformin? What is the difference between metformin and metformin ER?
It’s possible that your rash is due to the metformin, but you would need your healthcare provider to examine the rash and determine the cause. Rashes can occur due to a number of factors, including medications, detergents, soap, lotions, foods and stress. Metformin ER is just an extended-release version of metformin, and some people find that this form works better at controlling blood glucose levels.