Half a cup??!!! Wow. No wonder you had a bad reaction. It's been used for a very long time on both people and animals. I researched the crap out of DE before I started on it because I an a very cautious person who doesn't take unnecessary risks. This is the same reason I've never tried an ICU protocol. Stop saying no one should use it! You don't know what you are talking about! It's fine to say it didn't work for you, but why would you try to convince others not to use it when it has done wonders for them??!! You sound bitter. I had a terrible reaction to Oxypowder , but I know I'm in the minority so I have never come to CZ espousing that no one should ever use it ever again because of my bad experience. Like I said, you sound bitter because you admittedly overdid the DE by taking 3 tbsp to half a cup at a time. Do some research on it or just be like Elsa and let it go, but either way you need to step down from your soapbox. Educate yourself before you start bashing. If you had done your research you would have known how much to take and would have never taken as much as you did. Everything in moderation!!! Your tirade is not helping anyone who is struggling with parasites and you sound very uneducated. I'm done with you.