Ice Cool Oldendandia Water is a carbonated beverage that is made from natural mineral water and oldenlandia extract123. Oldenlandia is a herb used in traditional Chinese medicine that is known to clear heat, detoxify, and improve digestion1234. Ice Cool Oldendandia Water is a popular drink in Singapore, especially during hot weather. It is also halal-certified and comes in glass bottles24. Some people enjoy drinking it with ice or lemon slices for a refreshing taste.