Werbeniuk was noted for the copious amounts of alcohol he consumed before and during matches. He said that he generally drunk around six pints of lager before a match and then one pint for each frame. He said he did this to counteract essential tremor. Later in his career he also took propranolol, a beta blocker; some sources say that he took it for the tremor, while others say he took it to cope with the effects of his enormous alcohol consumption on his heart.
Werbeniuk was ranked as high as eighth in the world in 1983 and reached the quarter finals of the world championship four times before propranolol was banned in snooker competition. He played his last professional match in 1990.