For legal What is considered to be a drug, it must have a clearly defined law. If there is no law. It's not the drug even though the drug thing, it will have the influence that caused the addiction.
For legal What is a drug that needs to be clearly defined laws. If the law stated That is not a drug. Although the drug is effective or causes addiction.
For in the law. What is considered the drugs shall be clearly defined laws without the law stated that it is not a drug. Although the drug is the effect that cause addictive.