What is Biolac Fort? Biolac Fort belongs to the group of functional foods and is made in the form of hard tablets. Biolac Fort has the main ingredients lactocacillus acidophilus, Bacillus clausii, L-Lysine indicated in the case of probiotic supplementation for the intestinal tract. However, before using Biolac Fort, patients need to carefully learn the information of the drug and follow the instructions of the doctor.