Yes, it can supplement protein.

Many people don’t know when is the best time to drink pure milk. This may cause the nutrients in the milk to be wasted, and may even affect human health. So, when is the best time to drink pure milk?

Some people think that the best time to drink pure milk is in the morning, so many people include milk in their breakfast. It is really good to drink milk between 8 and 9 o'clock in the morning, because this is when the human body needs a lot of nutrients.

However, many people don’t know that the best time to drink pure milk is at night. This is because milk contains tryptophan, a biochemical that can make people feel tired and sleepy. In addition, there are abundant trace amounts of morphine-like substances. These substances have very good sedative and hypnotic effects and have a good effect on promoting sleep. The best answer to when is the best time to drink milk would be at night.