No, ANR is not invasive. An invasive procedure is defined as a procedure that accesses the body by an incision or puncture. During the entirety of the ANR treatment, the patients are neither cut into nor penetrated in other ways. The ANR treatment is a pharmacological procedure, and patients are put under sedation, not general anesthesia, like in the case of surgery. This still assures that the patient benefits from being asleep and not feeling the withdrawals.