: Mail-order sales are limited to 7.5 grams of pseudoephedrine per customer in a 30-day period.

: Standard delivery apps (like DoorDash or Instacart) generally only allow you to purchase Sudafed PE (phenylephrine), which is not a restricted substance but is often considered less effective for congestion. International Availability

: While it is generally available without a prescription in most states, some—such as Oregon —may require a doctor's prescription for any pseudoephedrine purchase. Where to Buy

Legal Requirements for the Sale and Purchase of Drug ... - FDA

: Your personal information, including name and address, is recorded in a national database (NPLEx) to track purchase amounts across different retailers.

: You can often order through the official Sudafed website which redirects to authorized retail partners.

Yes, you can buy (pseudoephedrine) online , but the process is more strictly regulated than buying standard over-the-counter medicine. Because it contains pseudoephedrine—a precursor used in the illegal manufacture of methamphetamine—it is federally regulated under the Combat Methamphetamine Epidemic Act of 2006 (CEMA) . Requirements for Buying Sudafed Online