Which of the following methods of delivery is NOT used for inhaled medications?

Inhaled medications are typically delivered through devices specifically designed for that purpose, enabling direct administration to the respiratory system. Metered-dose inhalers (MDIs), dry powder inhalers (DPIs), and nebulizers are all effective methods for inhalation therapy.

MDIs deliver a measured dose of medication directly to the lungs in aerosol form, while DPIs allow patients to inhale medication in a dry powder form. Nebulizers convert liquid medication into a mist, making it easier for patients to inhale. All of these methods focus on developing an inhalation route that maximizes drug delivery directly to the airways.

However, oral tablets are not designed for inhalation and instead are meant for systemic absorption through the gastrointestinal tract. This route is not suitable for conditions requiring targeted lung delivery, such as asthma or COPD, which are where inhaled forms are specifically beneficial. Thus, the correct answer indicates that oral tablets are not used for inhaled medications.