Abstract: The invention relates to the use of an organic extract of the plant Cinnamon or a chemical constituent present in said plant, to prepare a pharmaceutical composition useful to inhibit the growth of Helicobacter pylori and the urease activity of Helicobacter pylori. Most preferred chemical constituents are cinnamaldehyde and methoxycinnamaldehyde. The extract may be used either as a drink, with or without additional flavoring ingredients or transformed into a capsule. The invention also relates to in-vitro method for determininig the inhibition of urease activity of Helicobacter pylori using said organic extract of the plant or chemical constituents present in said plant.

Abstract: The invention relates to the use of either an aqueous extract or an organic extract of the plant Thymus to prepare a pharmaceutical composition useful to inhibit the growth of Helicobacter pylori and the urease activity of Helicobacter pylori. In case of an aqueous extract, a minimum amount of 0.5 mg of the dry plant in the extract is required but the preferred amounts are above 1.2 mg. The aqueous extract may be used either as a drink, with or without additional ingredients, or transformed into a capsule or a paste. The invention also relates to in-vitro methods for inhibiting the growth of the urease activity of Helicobacter pylori.