Some negative side effects include nausea, fatigue, dry mouth, and diarrhea. While CBD products with less than 0.3 THC content are generally legal for consumption across the United States, some states require prescriptions from doctors for CBD usage. Therefore, users should check state laws as to whether they are allowed to use CBD. Third-party lab testing means testing is performed by a third-party accredited laboratory to verify the safety and purity of products.Following a change in legislation in 2017, CBD was changed from a schedule 9 drug to a schedule 4 drug, meaning that it is legally available in Australia. However, most products containing CBD are still yet to be approved by the Australian Register of Therapeutic Goods .