A unit for filling containers with a dose of product, comprising: - a line for transporting the containers extending along a first movement path and provided with a plurality of supporting seats for the containers arranged in succession along the first movement path; - a station for filling the containers with a dose of product; characterised in that the filling station comprises: - at least a first containing seat designed to receive a dose of product; - a movement device comprising a first element rotating about a first axis of rotation which is substantially vertical and supporting the at least one first containing seat in rotation about the first axis of rotation along a closed path; - a device for adjusting the position of the at least one first containing seat along the closed path, configured for adjusting the position of the first containing along the closed path between a position for receiving the dose and a position for releasing the dose inside a respective container; - a substation for forming the dose inside the at least one first containing seat, provided with a device for releasing a predetermined quantity of product forming the dose inside the at least one first containing seat S1 located in the position for reception of the dose; - a substation for releasing the dose of product from the at least one first containing seat positioned in the position for releasing the dose to a respective container transported by the transport line, the device for adjusting the position being configured to place the at least one first containing seat in the position for receiving the dose at the forming substation and in the position for releasing the dose at the release substation. - a line for transporting the containers extending along a first movement path and provided with a plurality of supporting seats for the containers arranged in succession along the first movement path; - a station for filling the containers with a dose of product; characterised in that the filling station comprises: - at least a first containing seat designed to receive a dose of product; - a movement device comprising a first element rotating about a first axis of rotation which is substantially vertical and supporting the at least one first containing seat in rotation about the first axis of rotation along a closed path; - a device for adjusting the position of the at least one first containing seat along the closed path, configured for adjusting the position of the first containing along the closed path between a position for receiving the dose and a position for releasing the dose inside a respective container; - a substation for forming the dose inside the at least one first containing seat, provided with a device for releasing a predetermined quantity of product forming the dose inside the at least one first containing seat S1 located in the position for reception of the dose; - a substation for releasing the dose of product from the at least one first containing seat positioned in the position for releasing the dose to a respective container transported by the transport line, the device for adjusting the position being configured to place the at least one first containing seat in the position for receiving the dose at the forming substation and in the position for releasing the dose at the release substation.