Nausea is a stomach illness characterized by a disinclination to eat and an urge to vomit. It is also known as queasiness and gives most people an unpleasant sense of discomfort and unease. You have probably felt nauseous before, and low blood pressure is one possible cause of this symptom. It is never pleasant but usually passes quickly enough. There are many types of over-the-counter medications that treat nausea and protect your stomach lining.

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