Scopolamine (scopolamine hydrobromide; first word pronounced: skoh‑PAW‑lah‑mean), also known by another name — hyoscine (hyoscine hydrobromide). It is colorless, odorless and tasteless. Its clinical uses are primarily as a sedative, and applied locally (directly) as a mydriatic, which causes the pupil of the eye to dilate. When used as a sedative, the primary uses are to combat vertigo and motion sickness. When used with morphine and pentobarbital, to a woman in labor, it produces a «twilight sleep.» It is also used as a premedication preliminary to surgery anesthesia.
Since scopolamine completely blocks the formation of memories, unlike most date‑rape drugs used in the United States and elsewhere, it is usually impossible for victims to ever identify their aggressors (or interrogators, if you were a prisoner).
To use scopolamine most effectively to get a prisoner to tell you what he or she knows, the key is where you inject it, and in what amounts. Normally it is introduced into the body by a transdermal patch or intravenously in the arm. However, if you inject it into the spine (amount classified), it causes absolutely incredible pain, accompanied by violent convulsions and seizures. If injected into the spine in the appropriate amount, more than 95% of all prisoners will tell the truth — not something fabricated to stop the pain — within 24 hours