My husband was having neurological symptoms as well as digestive symptoms including daily diarrha. His copper was low and did not respond to supplementation.

Very long story short, I figured out that the neurological symptoms were due to daily use of his antacid for GERD and diverticulitis. The proton pump inhibitor usage caused malabsorption. The med itself was blocking absorption of copper.

After discontinuing use of that OTC med and receiving a course of Augmentin, his symptoms resolved.

Also, if you don't have a gallbladder and your colonoscopy was normal, constant diarrhea can be controlled with Colestipol! It's called BAD (bile acid diarrhea).

Antibiotics mess with my gut horribly, too! So much so anymore that I require IV fluid support when I must take them.