Highly caffeinated beverages such as Coca-Cola and energy drinks will soon be incorporated with warning labels in South Korea, according to a rule to be passed by its government.

The rule requires a warning to be placed on all bottles and cans used for drinks that contain large quantities of caffeine that may be harmful to pregnant women and children.

Manufacturers must specify concentration levels and denote caffeine content in milligrams in the future.

The Korea Food and Drug Administration (KFDA) has issued administrative notices for the mandatory measures that will require producers to label such drinks prominently.

All drinks that have caffeine concentrations exceeding 0.15mg/ml will have to caution consumers on possible adverse effects, under the revision.

With the new measures in place, KFDA aims to warn consumers not to ingest excessive amounts and protect the people who may be more susceptible to caffeine.