When making coconut yogurt with probiotics, I recommend choosing capsules that provide a minimum of 30 billion CFUs. I usually use two pills that contain around 15B each. Also, ensure the probiotics don't contain any pre-biotics or enzymes. These can interfere with the fermentation process. When looking at probiotics, look for specific strains, including Lactobacillus acidophilus, Bifidobacterium bifidum, Bifidobacterium lactis, and Streptococcus thermophilus.