Is it legal to buy CBD for dogs anywhere in the US?
In 2018, the Farm Bill was signed into law, which officially separated hemp (the nonintoxicating strain of cannabis) from marijuana (the type of cannabis that contains the cannabinoid THC and is used recreationally and medically).
Since then, products made with industrial hemp, which has less than 0.3 percent THC, can be grown, produced, transported, and sold across state lines. This means that hemp-made CBD is legal to buy (almost) everywhere in America.
There are a couple of small caveats worth noting, which relate to state-specific laws. In Idaho, CBD oil must contain zero percent THC (which is no problem for pet-grade oil).