Essence is part of the family of compressor nebulizer systems from Philips respironics and provides fast and efficient aerosol drug deliver in a compressor nebulizer system that's price right. Combined with proven side stream technology, essence is compact, lightweight, and economical. Its stylish design blends gracefully into the home environment. Side stream disposable and reusable nebulizers essence works efficiently with the side stream reusable and disposable nebulizers that features an active venture system and provide air flow in addition to that supplied by the compressor, resulting in faster drug delivery and shorter treatment times. They are easy to use with fewer parts to assemble or clean than other conventional nebulizers. Side stream unique design provides consistent delivery of medication time after time.