Saw an item on tv only yesterday when collagen supplements were debunked. As were most apart from low dise vitamin D. I was aware of collagen being in either beef and fish ingredients but had no idea how they were produced. Basically all the rubbish from both animals and fish eg hooves, tails, guts are processed for the tablets. Dr highlighted our ears are collagen as an example of how unnecessary the supplement is. Don't know the programme but it would be one on in the morning. Certainly won't be wasting money on that.