The fourth Ficus species (F. sycomorus) which is used traditionally by the Hausa and Fulani tribes of northern Nigeria to treat diabetes [33] together with known glucose lowering potential in vivo (Table 2) was a weak inhibitor of α-amylase activity but a potent inhibitor of α-glucosidase (sucrase) activity with an EC50 of 217 ± 69 μg/ml. The gene discussed is SI; the disease is diabetes mellitus.