What is a possible adverse effect of Pseudoephedrine (Sudafed)?

Pseudoephedrine, commonly known as Sudafed, is a decongestant used to relieve nasal congestion due to colds or allergies. One of the possible adverse effects associated with Pseudoephedrine is restlessness. This effect can be attributed to the stimulant properties of the drug, which can lead to increased alertness and, in some individuals, result in feelings of anxiety or restlessness.

The mechanism of action involves stimulation of alpha-adrenergic receptors, leading to vasoconstriction and reduced swelling in nasal tissues. This stimulation can also affect the central nervous system, causing symptoms such as restlessness or insomnia, especially in sensitive individuals or when taken in higher doses.

Understanding this mechanism is essential for recognizing how Pseudoephedrine can influence both physical and psychological states, emphasizing the need for caution when using it, particularly in individuals with a predisposition to anxiety or restlessness.