Individuals may be required to wear respiratory devices that include but are not limited to: Air Purifying Respirators (APR) which include half-face and full-face negative pressure respirators, hooded powered air purifying respirators, or Supplied Air Respirators (SAR), which include hooded or full face supplied air respirators. About InvaGen Pharmaceuticals, a Cipla subsidiary InvaGen Pharmaceuticals, Inc. is engaged in the development, manufacture, marketing, and distribution of generic prescription medicines with focus on a range of therapeutic areas, including cardiovascular, anti-infective, CNS, anti-inflammatory, anti-diabetic, and anti-depressants.