Hello
My 13yr old son is newly diagnosed and we need to change the Lantus cartridge in his JuniorSTAR pen but have no instructions! There is a tiny ring which looks like it should unscrew according to pictures on google but it won't move! Anybody got any ideas? Many thanks
My 13yr old son is newly diagnosed and we need to change the Lantus cartridge in his JuniorSTAR pen but have no instructions! There is a tiny ring which looks like it should unscrew according to pictures on google but it won't move! Anybody got any ideas? Many thanks