Several embodiments of the present invention provide for an agglomerate useful for an agglomerate based dry powder inhaler comprising at least one active pharmaceutical agent, at least one additional functional excipient and at least one excipient, such as a binder. Useful at least one additional functional excipients include but are not limited to magnesium stearate, colloidal silica, silicon dioxide, sucrose stearate, L-leucine and combinations thereof.
