Cetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, sneezing, hives, and itching. It works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction.
In general, a healthy breakfast contains protein, fruits, whole grains, or vegetables, says Ruth Frechman, MA, RDN, CPT, nutritionist and author of The Food is My Friend Diet.. Typically, you want to include foods from at least three of these groups, says Frechman.
Eat a light breakfast such as a bowl of cereal and a banana, or an energy bar if you're swimming a morning event. If you're swimming in the afternoon, eat a big breakfast and a light lunch. Eat one or two hours before the event. Bananas, crackers, and plain toast with no butter in modest amounts are good food. The best foods are pasta, cereals, bagels, breads, fruits, and vegetables.