Debacterol is a natural medical product in use for approximately 100 years as a treatment for canker sores. It is applied topically to active canker sores for approximately 5-10 seconds. It seals individual lesions and resolves associated pain permanently.
The Seine River. The Seine River is 480 miles long and is the biggest river in France in terms of popularity and name recognition. It begins in the Alps and flows north and west through Troyes, Paris and Normandy, ending in the English Channel.
The longest river in France is the Loire. Unlike some of the other rivers in this list of the top 5 longest French rivers it is also 100% in France; so there is no debating it is the longest French river. It is 1012km long, which despite it's incredible size only makes it the 170th longest river in the world.