You will note that you are warned about the dangers of antibiotics, and how they should be absolutely avoided except in a life-saving circumstance. If you are taking an antibiotic you should take probiotics along with them, staggering the ingestion of the two by two hours. If you are told not to take probiotics while you are taking a course of probiotics you can begin a probiotic regimen once you have finished the antibiotic course.
Also it is recommended that you avoid commercial yogurt and kefir.
Combining the info from these doctors you can link the common denominators about probiotics and what makes sense.
Lastly, realize that all these doctors sell probiotics. Taking probiotic supplements has its place in our natural health program, but getting most of your probiotics directly from the foods we eat and drink is preferred.
How to Increase Probiotics in Your Diet