This is not based on a calendar month (e.g., January 1st–31st). Instead, the system looks back at the previous 30 days from today. If those total purchases exceed 9 grams, you must wait until enough time has passed for an older purchase to "fall off" the 30-day window. How Much is 9 Grams?
To put these limits in perspective, 9 grams is roughly equivalent to of standard Sudafed. If you are using a 12-hour or 24-hour formulation, you may reach this limit faster than you expect. when can i buy sudafed again
If you have been denied a purchase of at the pharmacy, it is likely because you have reached a federal or state-mandated legal limit. Because pseudoephedrine can be used to manufacture illegal substances, its sale is strictly monitored. When Can You Buy Sudafed Again? This is not based on a calendar month (e
In most cases, you can buy Sudafed again . How Much is 9 Grams
Federal law limits you to 9 grams per 30-day period.
You are restricted to 3.6 grams of pseudoephedrine base per day.
Legal Requirements for the Sale and Purchase of Drug ... - FDA