His son Georges was also a pharmacist, specialist of plant chemistry. Georges Tanret identified an alkaloid (galegine) from Galega officinalis that was evaluated in clinical trials in patients with diabetes in the 1920s and 1930s.Simonnet H, Tanret G. Sur les propietes hypoglycemiantes du sulfate de galegine. Bull Soc Chim Biol Paris 1927Bailey CJ, Campbell IW, Chan JCN, Davidson JA, Howlett HCS, Ritz P (eds). 2007. Metformin: the Gold Standard. A Scientific handbook; Chichester: Wiley. Chapter 1: Galegine and antidiabetic plants
