Caffeine in colas makes no difference to the taslte buds but can be mildly addictive. This was reveled by a leading medical institute John Hopkins Medical Institutions in USA, that contested the clams of manufactures of soft drinks that they ass caffeine to cola just for taste.

The majority of those who drink cola can't tell whether a soda contains caffeine or not. A study on 25 adults showed that only 8 % of adult cola drinkers could detect cafeine at ta concentration of 0.1 milligram per millilitre