Can a lactose intolerance person eat mayonnaise?

Mayonnaise is usually made from oil, vinegar, and egg yolk, and it does not contain any lactose. Lactose is a sugar found in milk and dairy products. Some brands of mayonnaise may contain small amounts of milk or milk powder, but the amount of lactose in these products is usually very low and unlikely to cause symptoms in people who are lactose intolerant.

If you are lactose intolerant, it is always a good idea to read the ingredient label of any food product before you eat it to make sure that it does not contain any milk or milk derivatives.