All asthma inhalers in the US must use hydroflouroalkane (HFA), a "greener" and more earth-friendly chemical compared to the old chemical, chloroflourocarbon (CFC) which damages the earth's ozone layer. Old...
created by Terri Potratz | 51 wks ago | updated 47 wks ago 334 views | 23 recommendations | 4 comments