A nebulizer comprising a body (2) presenting a first portion (3) defining a reservoir arranged to contain a medical product and being able to be connected to a generator of a forced flow of a fluid able to transport the product towards a dispenser (5), the first portion (3) comprising a hollow tubular body (7, 10) disposed in the reservoir, its cavity (12) being in communication with the flow generator, the tubular body (7) being coaxially surrounded by a tube (13) arranged such as to create with the tubular body (7) a space (15) through which the product is able to rise from the reservoir as far as the end (7A) of the tubular body (7), where apertures (22) are provided in a part (20) of the tube (13) positioned transversely above the tubular body (7) and above an end opening (12A) of its cavity (12), above the opening (12A) there being positioned a deflector element (44). The tube (13) positioned above the tubular body (7) and the deflector element (44) form a single piece.
