What drug is most commonly used to incapacitate people into having non-consensual sexual experiences?

The correct answer is GHB, which stands for gamma-Hydroxybutyric acid. Its chemical formula is C₄H₈O₃.

GHB or Gamma Hydroxybutyrate (C4H8O3) is a focal sensory system (CNS) depressant that is normally alluded to as a "club drug" or "date assault" sedate. GHB is mishandled by teenagers and youthful grown-ups at bars, gatherings, clubs and "raves" (throughout the night move parties), and is regularly set in mixed drinks. Elation, expanded sex drive, and peacefulness are accounted for beneficial outcomes of GHB manhandle. Negative impacts may incorporate perspiring, loss of cognizance, queasiness, fantasies, amnesia, and trance like state, among opposite reactions.

accelerated heartbeat, raise in blood pressure, slow in digestion, raise in blood sugar and perspiration. (myers' psychology for ap 2nd edition pg 87)