I am sorry Bubbles is not feeling well.
When an indoor kitty has diarrhea and dry vomiting, I blame the food.
Give her one quarter of a ten mg pepcid a/c (famotidine). I usually add it to a tablespoon of baby food chicken with no onion or garlic Or canned cat food.Every 12 hours.
Remove all dry food and any wet with chunks, pieces or shreds.
Feed only smooth pate canned food or baby food. Add one tablespoon of rice cereal or boiled white rice to clear up diarrhea.
If she gets dehydrated give him tuna water drained from the can.
Please let me know how she is doing .
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