: You are limited to 9 grams of pseudoephedrine within any 30-day period.
Buying Sudafed (pseudoephedrine) in the United States is regulated by the of 2005 to prevent the illegal manufacture of methamphetamine. While Sudafed remains available over-the-counter without a prescription in most states, there are strict limits on how much you can purchase. Standard Purchase Limits sudafed buying limits
Pharmacies use an electronic tracking system, such as the National Precursor Log Exchange (NPLEx) , to monitor these limits in real-time. Pseudoephedrine in the States : You are limited to 9 grams of