Famous Bill Marler said, “You'd have to drink from a copper cup every meal of every day for 25 years," to be affected from it.
See i love moscow mule I recently read an blog on Are Copper Mugs Poisoning You?. and i got to know Drinking something that’s been lying inside a copper mug for more than 2 hours is not safe to consume. However, the important thing to note here is that there are no credible sources that suggest how long do you need to keep a drink into a copper vessel for the harmful reaction to occur.
So its quiet debatable topic
See i love moscow mule I recently read an blog on Are Copper Mugs Poisoning You?. and i got to know Drinking something that’s been lying inside a copper mug for more than 2 hours is not safe to consume. However, the important thing to note here is that there are no credible sources that suggest how long do you need to keep a drink into a copper vessel for the harmful reaction to occur.
So its quiet debatable topic