Roger, I’m not 100% certain on this, but I’m pretty confident that the difference here (and what makes it legal for people to sell it on Amazon) is that they are ONLY selling Hemp derived CBD vs. Cannabis derived CBD. Hence the “hemp extract” which is why the Farm Bill passing was such a big deal. As far as I’m aware, you can get CBD from both cannabis and hemp, but the hemp is legal federally. The bigger problem that I see is how misleading all of the amazon products are though because of these amazon regulations. All of the bottles I’ve seen only show the amount of “Hemp seed extract” (ex-2,500 mg Hemp Oil Extract) which is just like buying 2,500 mg of orange juice when I’m looking for vitamin c!
How to vape CBD oil is up to you, but remember that effects are stronger as a concentration of cannabidiol rises. Vaping CBD oil is nothing special and unlike nicotine, users of CBD vape oils work their way up instead of the opposite. Vape oil on itself is safe and there is a lot of scientific evidence that clearly demonstrates that CBD oil for vaping has genuinely nothing to do with getting high.