 Prior to going to rehabilitation, he was using intravenous heroin couple of times a week since age 17, which would have been over a period of about five years, reports heavy use of cannabis, smoking pot up to five times a day if he could. 
Prior to going to rehabilitation , he was using intravenous heroin couple of times a week since age 17 , which would have been over a period of about five years , reports heavy use of cannabis , smoking pot up to five times a day if he could .