Yes you can.
The following link will elaborate:
If your pet is nauseated or sick with vomiting or diarrhea issues:
To help settle the stomach you could try one of the following drugs. My favorite product is Pepcid (an over-the-counter antacid).
Pepcid comes in 10mg or 20mg tablets. You can give it every 12 hours.
Pepto-Bismol (NOT TO BE USED IN CATS)
Although a veterinary examination is always going to be recommended, especially with vomiting episodes and/or diarrhea, here is a bland diet recommendation:
Boiled boneless, skinless chicken breast
Cooked white rice
Low-fat cottage cheese
*Never add on salt, pepper, oils, butter to any of the above
*Ideally, give 1/3 chicken or cottage cheese, and 2/3 white rice
*Sometimes, you will see cooking hamburger meat being recommended and taking off the fat. I try to avoid this option as it can exacerbate pets that may have pancreatitis. Chicken works great.
Veterinarians will often prescribe some prescription bland diets like Science Diet I/D or Iams Low-residue. Both are wonderful options
Definitely, get into a vet if any symptoms of illness have already persisted for more than 2 days.