Q: What do these substances have in common?
A: They are all banned by the NCAA per Bylaw 126.96.36.199.
Bylaw 31.2.3. [Ineligibility for Use of Banned Drugs]
Student-athletes who test positive for any NCAA Banned Substance “shall be declared ineligible for further participation in postseason and regular-season competition during the time period ending one calendar year after the student-athlete’s positive drug test.”