Science never ceases to amaze us with its advances, but I understand that the human brain isn't fully understood, so something like this could have many negative consequences. What if, instead of just reducing your addiction, you ended up becoming depressed and nothing satisfies you? I've seen some drugs make people feel dizzy, so I continue to believe it's better to use proven techniques such as willpower, abstinence, and commitment to avoid these types of things, since addictions are usually mitigated by the habits we have.
I remember that I used to smoke a lot, and since I started exercising, I need cigarettes less and less.