The All Black Israel Dagg says the night he mixed sleeping pills with alcohol during the 2011 World Cup was a stupid idea.
Radio New Zealand revealed last week Dagg and his team mate Cory Jane had abused the drug, and on Monday the players admitted they'd taken pills during a massage at the team's hotel in Auckland.
They say they had no intention of going out drinking and the next day had no memory of their escapade.
Dagg and Jane spoke to the media during Crusaders and Hurricane's training on Monday.
Dagg says when they took the pill they had no intention of going out partying and when they woke up the next morning they didn't know they'd been out.
Jane says it was frightening not being able to remember.
Dagg says their team-mates were extremely disappointed in the pair at the time.