New Delhi, Nov 8 (ANI):Daniel Radcliffe recently admitted that he accidentally drank a chemical additive on the sets of 'Horns,' which nearly killed him.He said that he didn't realize he was drinking water which contained antifreeze and it made him bed-ridden for three days, a leading daily reported. However, it was assured that the 'Harry Potter' actor has suffered no lasting damage from the unfortunate incident.