What are the different functions of the different strains?
A—There are certain strains of probiotics which are particularly effective in crowding out specific strains of harmful bacteria such as Clostridia or Klebsiella. Unless your doctor has positively identified the harmful strains via a stool culture, however, most individuals who use probiotics don’t actually know which harmful bacterial strains are present in the intestines and rely on a multi-strain probiotic to increase the beneficial flora while crowding out the undesirable flora. If you doctor has done a stool test and identified a particular pathogenic bacteria, he can prescribe a specific strain of probiotic particularly effective for that organism.
