Roppana doesn't guarantee it's product will work, That's what Andrew, the owner told me. I spent $222.89 on two different CBD oils. Both purchased from Maryjae's Smoak Culture in Austin Texas. I bought 500mg & 1500mg After several doses over hours & days... nothing happened. I've used other brands and my pain goes away so, I know CBD works; however, not RopaNa. Andrew at RopaNa offered not remedy, or options in trying to make me trust his product. "We do not guarantee our products will work" Andrew of RppaNa.