The federation said eight men and three women had tested positive for the banned substance methandienon.
The weightlifters were tested during a training camp earlier this month while preparing for the Games in August.
"The federation decided to withdraw the weightlifting team - men and women -from the Olympics," read a statement.
Bulgaria had been keen to clean up weightlifting's tarnished reputation in the build-up to Beijing after a series of doping scandals.
Olympics 2008 blog
Such are the gains in performance to be made by increasing muscle bulk and stamina, that for many, the temptations are too great
5 Live's Gordon Farquhar The team was stripped of three gold medals and sent home following positive drugs tests at the Sydney Games in 2000. Among the lifters who tested positive this time are Ivan Stoitsov, who won two gold medals at last year's world championships, and Olympic bronze medallist Velichko Cholakov. "At the doorstep of the Beijing Games our hopes have been damaged," the federation added. "The work has become meaningless and the tears that were to be shed in front of the national flag are replaced by tears of helplessness." The sport has been hit hard by problems with doping in recent years. At the last Olympics in Athens 12 of the 26 positive drug tests came in weightlifting, while earlier this month the International Weightlifting Federation handed out two-year suspensions to 11 Greek lifters who tested positive in March.
What do you think about disc herniations, bulged discs and intervertebral disc degeneration as a result of back squats in the long term? Do you think the risk is worth It? When you are training strength, the method is based on adding weight every session (if you don’t fail the previous one) and when weights are heavier the feeling is that you are pushing the limits and playing a dangerous game loading that massive weights directly over your spine. What if your legs are capable of facing weights that your back doesn’t. Obviously, the technique is the key for preventing from injuries, but honestly, we all know that never is perfect and more often is far away from optimal. What about the serious injuries of famous weightlifters like Layne Norton. What is gonna happen to our joints, sciatica, spine in the long term? Is in our health or are we running a serious risk?
Steroid Nation presents the unofficial working list of elite athletes banned from the 2008 Olympics due to doping. We compiled the list from a number of sources which we will credit soon (such as the IAAF site for track and field).
Such a list is imperfect because some athletes are presumptive -- banned before tryouts. Previous media reports put the number of banned athletes at 'over 40' and now 'over 50' . We count 78 athletes here.
This is a first pass. We will try to clean up the fonts and the spacing however this is a monumental task to investigate all the athletes around the world. Media: if you use this data, please credit the site.
The list-- found after the jump -- is ordered to nation, sport, gender.