Dogs with an upset stomach, regardless of the cause, should be fed a bland diet, something easy to digest. Not all dogs tolerate the same foods, so what bland diet is right for your dog may not be right for others. Generally, feeding plain boiled white rice (3 parts) mixed with one part plain boiled chicken or hamburger (fat removed) and small meals frequently until the stool normalizes works well. But do not feed people food, fatty foods, treats, or even normal dog food for most causes, as all of these can worsen diarrhea or prevent recovery.
Yes. Any dog can get an upset stomach with new people in the home, from boarding, going to the vet, a change in food that was too abrupt, or a change in routine. Some dogs with underlying diseases may be more prone to stress-induced colitis, such as those with Addison’s disease or generalized anxiety.
Generally, medications are only reached for after a bland diet and probiotics have been tried. Drugs may be used to stimulate appetite (e.g., Entyce®), to treat any nausea (e.g., ondansetron), or vomiting (e.g., Cerenia®). If blood in the stool develops, this can signify inflammation in the GI tract (though it can also occur with straining too much). Sometimes metronidazole, sulfasalazine, or tylan powder is used. These are antibiotics with anti-inflammatory properties in the gut. However, they should be reserved for special cases to minimize the overuse of antibiotics. Once a cause has been identified, such as inflammatory bowel disease or parasites, additional medications may be needed to treat underlying parasites or dogs who fail to respond to diet, probiotics, and antibiotic therapy.