Dear User, Thanks for using health care magic. A diabetic can take narco IP 110 as it is a simple pain medication (pracetamol )with low amount of hydrocodone (10 mg). Having said this it is better to take plain paracetamol rather than narco ip 110 as it some time causes addiction. There is no specific reason for nausea with this brand. I guess you are having nausea due to hydrocodone which could cause nausea during initial one to two weeks of treatment. I do not think it is less stronger as it comes from the reputed pharmaceutical company and works well in most of individuals. Generally pain in stomach area is due to gastritis or some abdominal pathology. Hope I have answered your query. If you have any further questions I will be happy to help . Thanks