Before vomiting usually one will feel nausous.  Nausea is an unpleasant wavelike feeling in the back of the throat and/or stomach that may or may not result in vomiting. Vomiting is the forceful elimination of the contents of the stomach through the mouth. Retching is the movement of the stomach and esophagus without vomiting and is also called "dry heaves." Even though treatments have improved, Nausea and vomiting continue to be worrisome side effects. Nausea is sometimes far more distressing for people than vomiting.

Symptoms

•    Increased saliva
•    Dizziness
•    Light-headedness
•    Difficulty in swallowing food or liquid
•    Changes in skin temperature
•    Increase in heart beat rate

Causes

Some of the common causes of vomiting are:

•    Overeating
•    Drinking excessive alcohol
•    Pregnancy
•    Migraine
•    Infections
•    Flu
•    Stomach upset
•    Stomach virus
•    Food poisoning
•    Poisoning
•    Accidental poisoning
•    Acute Gastritis
•    Reflux
•    Intestinal obstructions
•    Chronic digestive conditions
•    Peptic ulcers
•    Stomach Cancer
•    Intestinal obstruction
•    Kidney failure
•    Cholera.

Treatment

•    Have a cup of ginger tea
•    Eat a mixture of Honey and powder of 2 roasted cardamoms
•    Have a glass of chilled lime juice
•    Have a mixture of 1 tsp mint juice
•    1 tsp lime juice
•    1/2 tsp ginger juice and 1 tsp Honey
•    Slowly sip a glass of Honey water,
•    Have one tsp onion juice in regular interval
•    Slowly sip a glass of chilled cola

Relax for some time.