In combating modern drug abuse, one of today’s deadliest and most addicting problems comes in a bottle. In a Monday arrest of three men, the quantity of the anti-anxiety drug Alprazolam seized was enough to reach a $2,000 street value, or $20 per 100 pills, authorities said. With a doctor’s signature required per prescription quantity, it begs the question as to how dealers acquire the drugs in those large quantities.