i went into boots today to ask them a qusetion about 'xen' i noticed when i took the 'tevo' brand my tummy wasn't so grumbly after meals. but when i take 'xen' my tummy really does grumble after dinner lol. my fella can hear my tummy processing the foods looool . anyway he asked if i had any xen as they dont have any there as a shortage but i said im fine and go in smaller chemists. hope i can get my next batch ok xx