How long does Sudafed 120mg controlled release stay in your system?

Sudafed 120mg controlled release, which contains the active ingredient pseudoephedrine, typically stays in your system for about 24 hours. However, its effects may last around 4 to 6 hours after ingestion. The drug's half-life is approximately 6 to 8 hours, meaning it takes that long for half of the dose to be eliminated from the body. Individual factors such as metabolism, age, and overall health can influence how long it remains detectable.