Table 1.

Recommended preparation for breath testing.

Period before the Breath Test	Drugs/Activities to Be Avoided
4 weeks	Oral or intravenous antibiotics Prokinetic agents
2 weeks	Probiotics
1 week	Proton pump inhibitors
48 h	Motility regulators: loperamide, metoclopramide, trimebutine
24 h	Alcohol Fiber (particularly non-soluble fiber)
12 h	Oral food intake (only water is allowed)
The morning on the day of the test	Smoking Physical exertion Food Regularly used medications are allowed