Expert: Denver ER Doc replied 5 years ago. Hi there, Vomiting and diarrhea are not among the listed side effects of phenylpropanolamine (Proin), however it can cause restlessness and decreased appetite which may result in vomiting, GI upset, and possibly diarrhea.
A safe alternative for egg hunts is to use plastic eggs and fill them with goodies. Eggs after Easter: As long as the hard boiled, colored Easter eggs have not been out of refrigeration for more than two hours, they will be safe to eat. Eggs should be used within one week.
The maximum number of hours hard-boiled eggs can be at room temperature and still be safe to eat, according to the USDA. If you plan to eat your Easter eggs, don't hide them until just before the hunt. (Source: 1.usa.gov/ 160UjdA)