The acute hypoglycaemic activity of GLP‐1, xGLP‐1B, xGLP‐1B‐Sen and peptides 1–36 in KM mice as assessed by IGPTT. Saline (control), GLP‐1, xGLP‐1B, xGLP‐1B‐Sen and peptides 1–36 were i.p. administered 10 min prior to the glucose load (i.p. 2 g·kg−1). The blood glucose curves during the IPGTT are shown in panels A–E. Results are presented as means ± SD, n = 6.