Excellent product - challenging taste!
I've been giving this to my daughter as she needed extra silica to help detoxify aluminium (silica binds to aluminium). An added side effect, is that it has also made a big difference to the strength of her nails and hair. I would have given it 5 stars except for the taste - it is has a 'blood orange' flavouring that I find artificial and unpalatable (who knows how bad it tasted before the added the flavouring!). Note: it needs to be refrigerated after opening.