- Botanical name : Calotropis gigantea Linn.
- Family : Asclepiadaceae
- Malayalam : Erikku
- Tamil : Erukku
- English : Gigantic swallow wort
- Morphology : Tall shrub
- Rasa Panchaka (ksheera)
- Rasa : Tikta, lavana
- Guna : Ushna, Snigdha
- Veerya : Ushna
- Vipaka : Katu
- Karma : Kaphavatashamana
- Indications : Kushta, gulma, udhara
- Dose : Moola twak churna(2-5g), patra churna (3 -10g)
- Formulations : Arka lavana, Arkeswara rasa
