He's thin, about 5-foot-8 and in his early 20s.
Police say the suspect first asked about the availability of narcotic pain killers, then left the store. He returned minutes later with a note demanding the drugs and cash. He got what he wanted and escaped.
"It's very scary, and I wouldn't want my children, when they reach working age, to work in a pharmacy," Farmingville resident Denise Mullins said. "It makes me nervous. I think someday they may be buzzing people into pharmacies the way they buzz people into some jewelry stores."