A drugged-addled Long Island woman put a teenage boy in a coma late Sunday night after she lost control of her SUV and smashed into him and two other teens walking along a roadway, cops said.

Cathleen Wild, 28, of Lindenhurst, was held on $100,000 bail after she veered off a road in Deer Park at 11:45 p.m. and smacked into two 16-year-old boys and a 16-year-old girl.

Cops found a hypodermic needle in Wild’s GMC Jimmy and charged her with driving while ability impaired — a source said she was likely under the influence of heroin.

Victim Paulino Harrington was in a medically induced coma at Stony Brook University Medical Center with swelling on his brain and two punctured kidneys.

His two pals, Gabrielle Ferraro and Thomas Pirrone, sustained minor injuries.