Source: https://www.amazon.com/PERRINS-Original-Worcestershire-Sauce-Bottle/dp/B000RYFQ44/ref=as_li_ss_tl?ie=UTF8&qid=1520748664&sr=8-3&keywords=gluten-free+worcestershire+sauce&linkCode=sl1&tag=glufreeas03-20&linkId=423f3edaa91138a21ef37cce0525807d