My mother and husband have a history, between them, of trouble swallowing, unremittant heartburn
. They've both been on Nexium, and
previous to that, Prilosec, for quite some time.
Something doesn't sound right in the plumbing and he needs to be checked out.
Is he having regular bowel movements? If he hasn't had one in quite awhile [read that "days"], and shows any distension, he needs to be seen by a doc PRONTO (as in immediately).