Marijuana & hemp are both cannabis sativa (and some marijuana is cannabis indica). But “industrial hemp” (the only source of CBD lawful in all 50 states, thanks to the Federal Farm Bill’s exemption of it from the Controlled Substances Act) CBD extract products are lawful in all 50 states, can be sold on the open market at any store (not just a licensed dispensary) or online to anyone over 18–regardless of the customer’s or mfr’s state’s medical or recreational weed laws.
In fact, numerous studies have looked at the relationship between CBD and pain, and the results are promising. Researchers have looked at various kinds of pain – from joint pain to cancer pain. One finding is that CBD increases levels of glutamate and serotonin – both neurotransmitters that play a role in pain regulation. And CBD’s anti-inflammatory properties help by tackling the root cause of much chronic pain.