Pepto is safe for pretty much all ferrets, BUT since they hate it the
taste can increase stress AND there are better meds for much of what
it is used for.  It is usually better to use Biaxin and Amoxi with
helicobacter (instead of Amoxi plus Flagyl plus Pepto).  It is usually
better to use Carafate for ulcers than Pepto.
 
Blood in urine: If the vet determines that it is from a bladder infection
instead of higher up in the urinary system then watch for re-occurrence
later.  If it happens again then watch for other possible adrenal
neoplasia signs, and do a culture in case there is an antibiotic
resistance cause of infection to cover two not-unusual bases.  First,
though, find where the origin of the blood is.  A simple urine test can
determine if the there is blood in the urine and if there is a high white
count (sign of infection) as well as other things.  A CBC with Chemistry
Panel will help assess the kidneys though kidney disease can be hard to
spot in ferrets.
 
Red (frank) blood in stool tends to indicate a colonic problem but there
are an assortment of possible candidates.
[Posted in FML issue 4475]