Homeopathic Nux vomica has a tradition of use for symptoms related to over-indulgence, overwork, sedentary habits, night watching, shift work, travel, and at times when the body clock is upset. Nux vomica may provide symptomatic relief from insomnia that occurs around 3-4 am with thoughts of business in people who tend to be stressed, critical and over-sensitive. Its sometimes called the hangover remedy as it may relieve the symptoms of excesses of food, alcohol, coffee, drugs and mental stimulation.