Which of the following routes is NOT used for drug administration?

Which of the following routes is NOT used for drug administration?

• A. Inhalation
• B. Transdermal
• C. Oral
• D. Intradermal

Answer: (D)

The intradermal route is primarily used for specific medical applications such as allergy testing and vaccination, but it is not typically considered a standard route of drug administration for therapeutic purposes in the broader context. In contrast, inhalation, transdermal, and oral routes are widely utilized to deliver medications to achieve systemic or localized effects. Inhalation allows drugs to enter the bloodstream rapidly via the lungs and is often used in treating respiratory conditions, such as asthma or chronic obstructive pulmonary disease. Transdermal administration involves delivering medication through the skin for systemic effects, frequently used for hormonal therapies or pain relief. Oral administration is among the most common routes, where drugs are taken by mouth and absorbed through the gastrointestinal tract. Since intradermal administration is less common outside its specific applications compared to the other routes, it is correctly identified as not being typically used for general drug administration.

The intradermal route is primarily used for specific medical applications such as allergy testing and vaccination, but it is not typically considered a standard route of drug administration for therapeutic purposes in the broader context. In contrast, inhalation, transdermal, and oral routes are widely utilized to deliver medications to achieve systemic or localized effects.

Inhalation allows drugs to enter the bloodstream rapidly via the lungs and is often used in treating respiratory conditions, such as asthma or chronic obstructive pulmonary disease.

Transdermal administration involves delivering medication through the skin for systemic effects, frequently used for hormonal therapies or pain relief.

Oral administration is among the most common routes, where drugs are taken by mouth and absorbed through the gastrointestinal tract.

Since intradermal administration is less common outside its specific applications compared to the other routes, it is correctly identified as not being typically used for general drug administration.