King tonic (scientific name- Hadystis scandens roxb, Sanskrit name-Prasarini, Hindi name- Gandhli) is a creeper plant which grows in the wild mainly in the hot & humid climate of South East Asia. This medicinal plant emits a rotten smell though the extracted juice has no smell.
The juice extracted by crushing the leaves is used in curries or eaten raw as medicinal potion for certain gastro-intestinal ailments. It also helps reduce uric acid level in blood and relieves joint plain, reduces effects of paralytic attack, improves physical energy and counteracts allergy etc.