Medications
Taking some medications can also trigger nausea in many people. For instance, chemotherapy in cancer treatments would upset your stomach and lead to a nauseous feeling. Hydrocodone and codeine can also bring the same effects. Thus, make sure to read the information about the drugs carefully before starting. If you do not know what to do, then it is better to talk to your healthcare provider to find out whether nausea or vomiting might be a possible side effect. If that is your case, he or she might suggest other drug options or lower dosages. [2]
