Azadirachta Indica
Commonly called Neem.
It improves the insulin signaling molecules and glucose utilization in the skeletal muscle.
Clinical Research Studies
Azadirachta Indica A. Juss (neem) against diabetes mellitus
https://academic.oup.com/jpp/article/74/5/681/6375331?login=false
Antioxidant activity and inhibition of key enzymes linked to type-2 diabetes...by Azadirachta Indica
https://www.sciencedirect.com/science/article/pii/S1319610311000755
Evaluation of the Effect...of Azadirachta Indica...in Subjects with Type 2 Diabetes Mellitus...
Screening and design of anti-diabetic compounds sourced from the leaves of neem (Azadirachta Indica)
Clinical investigation of hypoglycemic effect of seeds of Azadirachta-Inidca in type-2 diabetes mellitus.
Azadirachta Indica inhibits key enzyme linked to type 2 diabetes...
https://www.sciencedirect.com/science/article/pii/S0753332218358906