I used the 500mg strength for my Father who suffers badly from Parkinsons. He is on lots of medication and I was hoping CBD could help alleviate some of the severe pain he is going through. Unfortunately, the CBD oil from Blessed didn't work as I expected. Sarah was very supportive and even offered a full refund to keep me happy to which I kindly declined. I understand CBD is not a cure all and my Father's condition is very severe so my expectations had to be set fairly. We will continue using the product regardless and will comment back if we notice any improvements. Debbie