What is the maximum amount of pseudoephedrine one can purchase in a single day?

The maximum amount of pseudoephedrine that an individual can purchase in a single day is 3.6 grams. This regulation is in place due to pseudoephedrine's potential use in the illicit manufacture of methamphetamine. The limit is designed to restrict the quantity that can be acquired at one time for legitimate medical use while still providing patients access to medications containing pseudoephedrine for conditions like nasal congestion.

This limit is consistent with federal law established under the Combat Methamphetamine Epidemic Act of 2005, which imposes strict controls on the sale and distribution of products containing pseudoephedrine. Retailers are also mandated to keep records of these purchases, reinforcing compliance with the law and helping to deter abuse.