As someone who is also severely lactose intolerant, this is something you figure out through trial and error (or I should really say trial and extreme digestive system upset). Unless the food product is clear with mentioning "no lactose", you can only trust that product will contain a "minimum upper bounds of 500 milligrams of lactose per serving for products labeled “0g sugar”" and it could have that much as the author says.
I basically take lactase enzyme pills everytime I have a dairy product. Better to be safe than sorry
I basically take lactase enzyme pills everytime I have a dairy product. Better to be safe than sorry