Which route of medication administration is done using inhalers within the nose?

The route of medication administration that involves using inhalers within the nose is the nasal route. This method allows for medications to be absorbed directly through the mucous membranes in the nasal cavity, facilitating rapid onset of action. Nasal inhalers can deliver a variety of medications, including decongestants, steroids, and other therapeutic agents intended for local or systemic effects.

Inhalation through the nose is particularly effective due to the large surface area and rich blood supply in the nasal passages, which can enhance drug absorption. This route is commonly used for certain medications that may not be effective or suitable for oral administration.

The other choices—rectal, ophthalmic, and oral routes—serve different purposes and are not related to the use of inhalers within the nose. Rectal administration involves delivering medication through the anus, primarily used for systemic effects or when oral intake is not feasible. Ophthalmic administration refers to medications applied directly to the eyes, aimed at treating ocular conditions. The oral route involves swallowing medications, requiring them to pass through the digestive system before entering the bloodstream, which is not relevant to inhalation methods.