- Botanical name : Costus speciosus (Koerning ex Retz.)
- Family : Zingiberaceae
- Malayalam : Channakkoova
- Tamil : Koshtam
- English : Spiral flag
- Habit : A succulent herb with long leafy spirally twisted stem
- Parts Used : Rhizome
- Rasa Panchaka
- Rasa : Tikta, Kashaya
- Guna : Laghu, Ruksha
- Veerya : Seetha
- Vipaka : Katu
- Karma : Pithakaphashamana, Grahi, Deepana, Pachana
- Indications : Krimi, Agnimandya, Jwara, Prameha
- Dose : Choorna 3-6g
- Formulation : Lohasavam
