What causes dizziness, nausea and diarrhea?

Dizziness, diarrhea, which is caused by the following reasons: the first, may be due to abnormal blood sugar, can eat some iron-rich foods, such as animal liver, animal blood, etc.; the second, due to bacterial infection in the intestinal tract, can be oral norfloxacin and amoxicillin, to treat; the third, can take Changyanning tablets or motilium to treat, can also take vitamin c tablets to supplement the lack of trace elements in the body.