In contrast, probiotic supplements contain only traces of lactose; therefore, sometimes they are appropriate even for the lactose intolerant. (fermented-foods.com)
For example, 3.5 ounces (100 grams) of cheddar cheese contain only trace amounts of it (6). (healthline.com)
Butter contains only trace amounts of lactose, so moderate consumption should be safe for most lactose intolerant people. (healthline.com)