This is from their website

The NEW Panera Charged Lemonades are the ultimate energy drink guaranteed to charge up your day. Powered by Clean caffeine from guarana and green coffee extract, these caffeinated lemonades feature refreshing mango, cranberry, or strawberry mint flavors. These drinks are cold, caffeinated, and so ready for summer. Plant-based and Clean with as much caffeine as our Dark Roast coffee.

So sounds like they are advertising it as a coffee or energy drink alternative

Merica!

Well the FDA says the caffeine content is safe for an adult.

Putting up the sign now probably hurts them in a civil suit.

"Charged" is definitely not enough.

Whatever it is called with that kind of caffeine content you warning label it with listing of exactly how much caffeine it has. Well maybe unless it is named literally "coffee" and is plain brewed coffee and at that brewed coffee with the normal levels of caffeine coffee contains.

Ones frappe, whippazino also better have needed labels in cases, since given all they mix how the heck one is to know what exactly is the contents. Oh this is extra special "angry frappe" with double squared shot expresso, so exactly how much caffeine is that dear seller per one glass? I just thought you put chili in it or something to make it "angry", but has literally multiple times more caffeine content.

This is why all the energy drinks atleast where I live have the ever present "contains high amount of caffeine x mg/100ml".

You sell something like that as counter served item with no packaging label to read, well now your menu list must contains at minimum highlights. Something like "our special drunk (HC)" and then somewhere on the menu there reads "HC means high in caffeine". Then obviously at the counter must be a full labeling booklet of "here is our every product from the plainest brewed coffee to our jumbo mega sandwich and special brew beverage with full nutritional information and ingredients"

Just like one can't sell say a pastry in cafe with nut creme filling with out having a big marker on all the menus "contains nuts, nut allergies bevare". Since similarly nut allergic consuming nuts can be life threatening, well for some people consuming caffeine isn't healthy and must be disclosed.

Is the stuff just in the soda fountain?

Why the fuck would lemonade of all things have caffeine anyway?

That's about the same as a large coffee, but nobody blinks an eye at that. https://www.cspinet.org/caffeine-chart

I definitely want some caffeinated lemonade

Most 8 ounce cups of coffee contain 80 to 100 milligrams of caffeine. A large coffee from Tim Hortons is 20 ounces which has roughly 250mg of caffeine. And I used to drink 2, sometimes 3 or 4, of those a day.

I'll likely be dead by next Tuesday. I sure could go for a coffee right now though.

Edit: For those that want to plan accordingly, a 20 ounce blonde roast from Starbucks has 475mg of caffeine. The dark roast had about 340mg.

I get what you're saying, but, for me, it would never even cross my mind that lemonade would ever have caffeine in it to start, let alone an insane amount like Panera has.

I read or research absolutely everything I consume at a restaurant

Generally if this is your standard people will die