EcoDophilus – 60 capsules £ 20.60 EcoDophilus supplies a combination of four different strains of lactobacilli and bifidobacteria - Acidophilus, Kefir, Bulgaricus and Bifidum live organisms. Acidophilus and Bifidobacteria Scientists discovered Kefir and Bulgaricus over a century ago. They found out that these organisms responsible for traditionally preserved foods such as cheeses and fermented milk. Among researchers, Acidophilus and Bifidobacteria are probably the most famous of all the micro-organisms in foods and food supplements.