Which component is commonly added to nasal decongestants to enhance their effect?

Pseudophedrine is commonly added to nasal decongestants due to its effective properties as a systemic decongestant. It works by constricting blood vessels in the nasal passages, which reduces swelling and congestion. This enhancement is particularly beneficial when relief from congestion is needed, allowing for easier breathing.

In contrast, while anticholinergics can reduce secretions, they are not primarily used for enhancing decongestion. Antihistamines are more focused on counteracting allergic reactions and reducing mucus production, but they may not specifically target congestion as effectively as pseudophedrine. Expectorants primarily help to loosen mucus and make it easier to expel from the respiratory tract, rather than directly reducing nasal congestion. Therefore, pseudophedrine stands out as the most effective complement to nasal decongestants for improving nasal airflow and reducing the feeling of congestion.