"I purchased this supplement for my mom who will be 90 this month, and had been wearing hearing aids for 4 years now. I thought at this point i have nothing to loose, so I purchased a full 6 month supply. After the 1st 6 months, she told my dad she was not going to use her hearing aids, as she can hear much better without them! I have to admit, i've never anticipated this level of efficiency from a supplement, but there it was! i've been supplementing my whole life and understand and experience the power of quality supplementation well but this took me by surprise! Will make sure mom NEVER runs out of Advanced Hearing Formula. Thank you, thank you"