The phrase "high lactose" means that a food or drink product contains a lot of lactose, which is a natural sugar found in dairy products like milk. Full definition
Some infants are sensitive to large amounts of lactose and can experience colic or excessive gas when consuming a formula with high lactose content. (myorganicformula.com)
Because of its relatively high lactose content, drinking milk, especially for adults and many children, is best avoided. (philmaffetone.com)
Babies of mothers with oversupply often have gastric distress from getting too much high lactose milk. (pregnancy-info.net)