The unstable weather conditions in several Brazilian cities are becoming almost an invitation for respiratory complications, including nasal congestion, commonly called a "stuffy nose".

To alleviate this symptom, many people choose to purchase nasal decongestants from pharmacies, which are available without a prescription. However, this is not always the most appropriate choice, as these products have the potential to aggravate pre-existing heart problems and even trigger them.

It is worth noting that decongestants have the potential to cause dependence, known as rhinitis medicamentosa.

The action of decongestants is not limited to the application site. Part of the vasoconstrictor substance is absorbed by the mucosa, entering the bloodstream. This can result in complications such as arrhythmia, tachycardia, and hypertension.

So, be careful and consult your doctor before using any decongestant!