Iron pills: Iron pills can affect digestive system & cause nausea or upset stomach, but not the other symptoms you described, unless you are taking the iron on full stomach, as food can lower absorption of iron, hence less effectiveness for your anemia, hence one possibility is that your anemia might be causing those symptoms. ...Read more.
Investigation procedures should follow those outlined in the IAMFES Procedures to Investigate Foodborne Illness book: 1  Case history interviews Collect additional case history information to supplement any previously collected information. 2  Evaluation of the foodservice establishment.
The procedure should include: an objective for the actions that will be taken, the procedure to be followed, the personnel that will be responsible, and any other anticipated resources needed. Objective The first step in the investigation is to state an objective for the action.