How long does tetrahydrozoline stay in system?

Tetrahydrozoline, commonly used as a nasal decongestant or eye drop for redness relief, typically has a short duration of action, lasting about 4 to 8 hours. However, the exact time it remains detectable in the body can vary based on individual factors such as metabolism, dosage, and frequency of use. Generally, it is metabolized and eliminated from the system within a day. Always consult a healthcare professional for specific concerns regarding drug effects and durations.