How Long Does It Take For Sudafed To Leave Your System?
How Long Does It Take For Sudafed To Leave Your System? The half-life of pseudoephedrine is between 5 and 8 hours, though the more acidic the urine, the lower the half-life. Pseudoephedrine can be illegally used to manufacture methamphetamine, which has become a national epidemic. How long does it take for Sudafed to wear off?