The most effective repositioning treatment for posterior canal BPPV is the therapist-performed Epley combined with home-practiced Epley maneuvers. Devices such as the DizzyFIX can help users conduct the Epley maneuver at home, and are available for the treatment of BPPV. Lempert maneuver or Roll maneuver
For the lateral (horizontal) canal, resulting in horizontal nystagmus, the Lempert maneuver has been used for productive results. It is unusual for the lateral canal to respond to the canalith repositioning procedure used for the posterior canal BPPV. Treatment is therefore geared toward moving the canalith from the lateral canal into the vestibule.The roll maneuver or its variations are used, and involve rolling the person 360 degrees in a series of steps to reposition the particles. This maneuver is generally performed by a trained clinician who begins seated at the head of the examination table with the person supine There are four stages, each a minute apart, and at the third position the horizontal canal is oriented in a vertical position with the persons neck flexed and on forearm and elbows. When all four stages are completed, the head roll test is repeated, and if negative, treatment ceases. Deep head hanging maneuver
For the superior ( also called anterior ) semicircular canal, resulting in vertical nystagmus, the Deep head hanging maneuver is used. The patient lays down on their back on a bed with their head overhanging the bed. In the first step the head is turned as backward (hanging) as possible.
In the following step, the patient remains lying but lifts their head with the chin close to the chest. In the last step, the patient sits upright with the head in the normal position. Before going to the next step, one has to wait until the nystagmus fully resides ( typical 30 to 60 seconds ) and progression from one step to the next has to happen in a fluid movement. Semont maneuver
The Semont maneuver has a cure rate of 90.3%. It is performed as follows:

The person is seated on a treatment table with their legs hanging off the side of the table. The therapist then turns the persons head 45 degrees toward the unaffected side. The therapist then quickly tilts the person so they are lying on the affected side. The head position is maintained, so their head is turned up 45 degrees. This position is maintained for 3 minutes. The purpose is to allow the debris to move to the apex of the semicircular duct. The person is then quickly moved so they are lying on the unaffected side with their head in the same position (now facing downward 45 degrees). This position is also held for 3 minutes. The purpose of this position is to allow the debris to move toward the exit of the semicircular duct. Finally, the person is slowly brought back to an upright seated position.