Flotea: Mixed tea made from rambusa leaves and fruit (Passiflora foetida L.) to help reduce insomnia. Flotea is a tea made from rambusa leaves and fruit that can help reduce insomnia. This tea is made naturally without any chemicals. Only boiled rambusa leaves and fruit extract provide a slight flavoring. The flavonoids, alkaloids, saponins, and polyphenols in rambusa can improve sleep quality by increasing gamma-aminobutyric acid levels in the brain.