When a dog drinks more water than usual it is a sign an underlying medical problem. There are many possible causes. Common causes are pancreatitis, an active infection, hormonal disorders (diabetes, cushing's), kidney or liver disease and even cancer to name a few causes. Any of the above diseases will cause her to vomit. To determine which of the above is the underlying cause your family veterinarian will need to do some blood work (chemistry profile, T4 & CBC) and urinalysis as an initial screening test. Treatment will be based on exam and test results. In the meantime, for the vomiting this is what you can do:
1- Do not give things like Pepto Bismol or Imodium. Start her on Pepcid AC (famotidine) 10mg tablet every 12 hours. You can buy Pepcid AC over the counter in any pharmacy.
2- No food or water for 4-6 hours. Need to give her gastrointestinal tract time to rest.
3- After 4-6 hours offer a small amount of water. Wait half hour, if no vomiting, offer a small amount of rice (50%) and boiled boneless chicken or ground beef (50%) 4-6 times a day. Keep on this diet for several days then wean into regular diet.
4- Follow up with your family veterinarian for a hands on examination.
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