alt Hacker News> Unfortunately there is an absurdly low limit on purchasing amount in the US.
The maximum safe dose for an adult is 240 mg in a 24 hour period. Current guidelines allow for getting a 10 day supply (the average cold lasts 7-10 days) in a single visit, and basically a limitless supply with a few visits (37 days worth every 30 days).
If you are running into purchasing limits, you are either making meth or blowing out your liver.
Edit: Math is hard. The 30 day limit is 7.5 grams (a 31 day supply), or 3.6 grams per trip (a 15 day supply).
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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.
What's 10 days/4 people? like... a family that lives together? Who will almost inevitably get each other sick? If the average cold lasts 7-10 days, one of them's going shopping for more while sick.
Sounds like great public health and safety policy there.
At least some states track it on a household (address) basis.
> If you are running into purchasing limits, you are either making meth
This would also be an insanely expensive way to make meth.