I guess I’ve never looked on amazon, maybe the kind we get is a Minnesota thing? They are regulated by the state you live in....Delta ones are stronger and work better, it will show up on a drug test but they are trying to change the laws here on this stuff so not sure how long they’ll be available. You might be able to order them from where I get them...my wife’s friend owns the store and is great with informing us how this stuff all helps. If you would like to know more send me a PM
