Home Alternative Therapy Alternative Therapy Provent Did You Know? OSA can be treated without using a mask and machine. Provent harnesses the breathing pattern of the user to maintain the airway. The FDA assesses and clears alternative treatments for the treatment of OSA, just as it does CPAP equipment. A prescription is required for the purchase of alternative treatments for Sleep Apnea. We can contact your doctor on your behalf to request an appropriate Rx.