Yes, clove leaves contain eugenol, which can effectively inhibit Helicobacter pylori

The effects of clove tea include the following: increasing gastric acid discharge and pepsin activity , has a protective effect on ulcers and gastric mucosal damage; effectively inhibits the growth of Helicobacter pylori;

Clove tea is suitable for everyone to drink, especially for people with stomach bloating and pain or spleen deficiency that is not obvious, or with weak spleen and stomach. People in the recovery period can reduce the amount of traditional Chinese medicine and take clove tea to nourish the stomach. Although clove tea is not an expert in curing diseases, it is the best helper for regulating the spleen and stomach. Take 3~5g of tea leaves and brew them repeatedly every day to drink

----The above are all quoted from: Changbai Mountain Weng Lilac Tea Information