Scientific name:  Azadirachta indica
Sanskrit name: Nimba
English name: Neem, Margosa

An infusion made from the extract of the leaves of aryaveppu, koovalam and chakkarakolli in equal measure is an effective medicine for diabetes.

Koovalam
Scientific name- Aegle marmelos
Sanskrit name- Maloora sreephala
English name- Bel tree

Chakkarakolli
Scientific name- Gymnema sylvestre
Sanskrit name- Ajasringi

For more details on folk medicine:-
Annamma Devasia, Kayyunnapara, Valillappuzha P.O., Malappuram Dist. Ph:  +91 9947578632