Intractable vomiting is the term used in reference to a condition in which the person vomits repeatedly without responding to medical treatment.Intractable Vomiting This can be caused by a number of different health issues, but the common aspect is that the condition does not seem to improve regardless of the medication or treatment option taken. Patients who suffer from intractable vomiting may be able to control the urge to vomit with the use of medical marijuana.