Can drugs or medications affect the result of a polygraph examination?
Anti-depressants — such as Lithium, Prozac, Valium, Xanax and Beta-blockers — can affect the result of a polygraph examination in that an inconclusive result can be obtained. For some people, however, these drugs will have no effect on the result of the examination. Contrary to some claims, drugs and medications do not allow a person to “beat” a polygraph examination. During the pre-test phase, it is immediately apparent to the well-trained and competent examiner whether the examinee is fit to undergo an examination.
