The 1nhaler is a breath-activated, single dose, disposable dry powder inhaler that is the size of a credit card. Our highly inventive, patented mechanism for drug delivery allows the 1nhaler to transform from its basic 2D flat shape into a 3D inhaler that can deliver a broad variety of inhalable drugs. This low-cost device is made from cardboard and completely flat in storage. As a result, it is uniquely portable, distributable and recyclable. It will help to replace traditional inhalers that are estimated to account for 3% of the NHS carbon footprint.