Coffee has a strong potential to worsen your gastrointestinal symptoms. Because it is a highly acidic drink, coffee can raise the acidity level in your stomach, further irritating an already inflamed lining.
If you have gastritis, seriously consider eliminating coffee or strictly limiting your intake. If your stomach's reaction is mild, simply switching to decaf or a lighter roast might be enough to reduce the impact.

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.