Can metformin XR made by Sun Pharm pass clear through my digestive system without being digested?

Often with the extended release meds they can be seen in the stool. It is the coating of the med that is seen, the drug has absorbed. Having diarrhea sped up your gi system and they passed thru faster.

Metformin XL can leave the capsule shell in your stool. Regardless of what drug company makes it. I used to take the Metformin XL for 4 years. It freaked me out when I noticed that in my stool the first time. May sound weird, but checking your poop is normal. The XL was supposed to make the side effects of stomach issues easier than the regular Metformin. But not for me. I find that taking the Metformin 500 mg, and cutting them in half is easier to do and doesn't make me run to the bathroom all the time. Plus it's cheaper and you cannot cut the XL in half. Also, no weird capsule shell in your poop to worry about. Anyway, to answer the question specifically, yes this side effect is normal. Hope this answer helped. Best wishes!