Nausea can be relieved with several over-the-counter remedies. Nausea, also called emesis and often associated with vomiting, is usually indicative of another condition. According to MedlinePlus, nausea is a common condition, but if poisoning is suspected, or the nausea is accompanied by bloody vomit, stomach pain, stiff neck or has been ongoing for over 24 hours, medical attention should be sought.