In general, it is best not to drink cola immediately after drinking milk, and it is recommended that the two be consumed at intervals.
Drinking cola immediately after drinking milk may lead to poor calcium absorption.
Milk is rich in calcium and is an excellent source of calcium for the human body. However, calcium absorption is affected by a number of factors, such as the carbonic acid content of cola can have a chemical reaction with the calcium in milk, forming calcium carbonate or other substances deposits, which is not conducive to the absorption of free calcium.
Although drinking cola immediately after drinking milk will not have a toxic effect on the human body, but after drinking milk it is best not to drink cola immediately. You can wait about two hours after drinking milk, most of the nutrients in the milk are absorbed, and then drink cola.