alt Hacker NewsUnfortunately there is an absurdly low limit on purchasing amount in the US.
In addition, I can't seem to find the 24 hour versions anywhere right now. I could probably buy meth more conveniently. :(
Cue: "A Simple and Convenient Synthesis of Pseudoephedrine From N-Methylamphetamine" https://improbable.com/airchives/paperair/volume19/v19i3/Pse...
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> 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).
I've only had to buy it in three states, but generally my experience has been that you can buy a "30 day supply" per month. How often are you sick that you need more than 30 days of the stuff every month? If we run out I'll buy a 30 day supply and that generally lasts the whole family a year or more.