Are Copper Moscow Mule Mugs Poisoning People?
That means that, for the causal Moscow Mule enthusiast, copper poisoning is essentially a non-issue.
Marler added that the actual alcohol consumption is more dangerous than the potential copper poisoning.
But, that hasn't stopped Iowa from barring establishments from selling the drink in a copper mug, according to ABC 7. So, while the health issue itself may be up for debate, it's possible that more states decide to do away with the fancy drinkware.
For promotional products distributors selling branded copper mugs: Don't worry, you aren't harming your end-users. But, it's good to keep an eye on your local legislation to see if they're still legal.