Thank you for doing that. As long as the hydration test is normal, then you can continue to treat at home. There are many causes of vomiting, but some of the most common reasons are a sudden change in diet, swallowing a foreign object, intestine parasite, or internal organ inflammation. A veterinarian might need to be seen. In the meantime, there are some over-the-counter treatments we can try first.
Treatment for vomiting is first recommended to withhold all food for the next 4 to 6 hours. Water should be withheld for at least 20 to 30 minutes. This allows the stomach to rest. You can also give an over-the-counter remedy to help reduce nausea. A good over-the-counter medication you can give is Prilosec (i.e. omeprazole) or Pepcid AC (i.e. famotidine). The amount to give is 10 mg.
If no vomiting occurs after 6 hours, then you can offer a low-fat diet, which consists of things like low fat cottage cheese, boiled chicken, white rice, or sweet potatoes. Offer this in small amounts. You can also add a little fiber to the diet to help bulk the stool. Psyllium husk such as Metamucil or Benefiber are safe fiber options you may add to the diet. Canned pumpkin can also be given, but it has less bulking effects compared to the others. Water may always be offered. Pedialyte is safe to give. Kaolin & pectin and probiotics are helpful adjuncts to treatment of diarrhea. Imodium can also be given in the amount of 2 mg every 8 to 12 hours as needed for a period of only 2 to 3 days. If diarrhea persists for more than 48 hours, then a veterinarian should be seen.
Keep monitoring the hydration status 1 to 2 times per day. If vomiting continues, or if you notice a worsening of the hydration status, then a veterinarian should be seen.