Many people think that a yellow or green nasal discharge means a bacterial infection, which requires antibiotics but it is not true. It can be a sign that your body is being attacked by either a bacteria or a virus. That said, a yellow discharge does not necessarily indicate a sinus infection.
After the stool is placed in the culture, it may take two to three days for any bacteria that is in the stool to grow. These bacteria can then be isolated and examined under a microscope so that they may be identified. The stool may also be tested for parasites or eggs.
It should be taken at least 2 hours after you last ate something then once you take it wait about 30-60 minutes before eating so that the med absorbs. So if you eat at 1am you will be fine taking it at 10am. You stomach will be plenty empty.