The present invention relates to a low-cost single-use disposable breath actuated dry powder inhaler, its method of use, and method of manufacture. The inhaler comprises a bottom layer and a top layer. The inhaler comprises a medicament compartment and an air passageway. Furthermore, the medicament compartment is sealed by a flexible pull tab that is easily removed before use, and the air passageway comprises a mouthpiece port, a Venturi section, and an air inlet port.