I seem to only be able to buy 10 days of Sudafed 24 Hour every 14 days. That doesn't work if you have allergies.

Presumably because places like Walgreen's can't adjust compliance per state and places like Alaska have "No person may purchase or possess more than 6 g of PSE, EPH or PPA per 30 days unless dispensed pursuant to a prescription"

Note that 6g / .240g = 25. So I can only buy 25 days worth of pills every 30 days. Or 12.5 pills every 15 days which is suspiciously close to that 10 every 14 days number.