Carrots are rich in carotenes, which are substances related to vitamin A. They're found in the orange pigments and are good for you, but, if you eat lots and lots of carrots, you can develop a yellowish or orange cast to your skin. It's mostly noticeable on the soles of your feet and the palms of your hands.
Benadryl is another decongestant safe for use in cats, although it is usually not as effective as chlortrimeton in treating congestion. Benadryl is generally more beneficial with treating snake bites, reactions to vaccinations, itching, and insect bites.
Butorphanol is used as a pain reliever and cough suppressant in multiple species. It may also be used to prevent vomiting in animals undergoing chemotherapy. It is effective, but short lasting, especially in cats. Contact your veterinarian if your pet experiences sedation, vomiting, diarrhea, decreased heart or respiratory rate, seizures, or coma while being treated with butorphanol. Keep this and all other medications out of the reach of children and pets.