These are drugs used to treat angina, heart failure, migraines, high blood pressure, anxiety, and tremors. But they are also used off-label by people whose jobs require calm nerves and steady hands, such as musicians, actors, surgeons, or pool players. In one study, a group of ophthalmology residents was given propanolol or placebo one hour prior performing complex and delicate eye surgery. Those who took propranolol were found to have decreased surgical tremors and anxiety, though the research couldn't say whether or not it helped with how well the surgery went. In the case of sports, the World Anti-Doping Agency has banned the use of beta blockers for a professional competition like archery, billiards, golf, shooting, and other sports because of the drugs' ability to reduce tremors and improve hand/arm steadiness.
Needless to say, painkillers have become a popular drug of abuse among adults and teenagers alike. People who were prescribed these drugs to treat chronic pain following an accident are most likely to abuse their medications in order to perform their daily tasks. Soldiers use them, too as a way of coping with the bruises, blisters and other pains they experience in combat operations. Military veterans have a troubling rate of substance abuse, in part because of painkillers.
These are popular for workers on boats or cruise ships, as well as scuba divers and astronauts. As the name suggests, they help professionals not to get nauseated or vomit once they're on the job.