Diabetes, increases in blood sugar and heart problems already are mentioned on Lupron's label, and the company will comply with the FDA request to add the new warning, she said.

Adrug formulation of resveratrol is now being put to a more rigoroustest, in clinical trials as a treatment for Type 2 diabetes andcancers.

It paves the way for the system to be combined with a range of medicines, and clinical trials have begun in the US with drugs for diabetes, organ transplants, mental health and tuberculosis.