I was on Colloidal Silver for years and budget was getting harder to manage so I went with a cheaper brand. Well, this did not work out to good. Was sick and just feeling horrible most of the time. So, with rearranging the budget I am back where I should have stayed. Health is improving, thank goodness and this is where I will stay. If you are thinking about purchasing, go ahead you will thank your lucky stars you have. Colloidal Silver is worth every penny. If you do not have your health you have nothing.