How could ginger helps to cure gastritis because its spicy?

Ging could not help: Most of the treatment regimens include a medication called a proton pump inhibitor. This medication decreases the stomach's production of acid, which allows the tissues damaged by the infection to heal. Two antibiotics are also generally recommended; this reduces the risk of treatment failure and antibiotic resistance.

Might not be a cure: but might help gi upset. Ginger helps to v nausea (including nausea associated with chemotherapy), morning sickness, motion sickness, diarrhea, upset stomach & menstrual cramps. It is a digestive aid. It can help v cholesterol level. It can also be used with common cold or flu. It has anti-inflammatory affects.