The FDA does not regulate any kind of "nutritional supplement". They only concern themselves with drugs. The only time in the US that a "nutritional supplement" is banned is after someone has died from taking it.
A few years ago tryptofan (sp) was taken off the shelves in the US and declared illegal after dozens of people died and the center for disease control was able to attribute it directly to this product. Turns out that the tryptofan was in fact genetically altered in some way so that the manufacturer could make more faster and cheaper. Well this little alteration killed dozens of people. This product came from China, and of course when confronted the manufacturer could not remember what he had done to alter the product.
So, it is buyer beware. You must know what you re taking yourself, it is your responsibity. Over the counter supplements can be as dangerous as a drug and can do alot of harm.
Early on in my quest to get rid of candida I stumbled upon plenty of websites for Threelac. It was all over like horse****. And that should tell you something. What it told me is there are a alot of people trying very hard to push the product. And that tells me something else. It must not be very good. Why? Because anything that is all that good creates a reputation for itself. No need to ram it down your throat at every pass.
So, having said that, I view Threelac as being a company that is taking advantage of desperate sick people, and overcharging them for subpar product. IMO. Now can it be dangerous? don't know because I won't take it. Once I saw there was some kind of bacteria in there I thought was shady, I disregarded it.
There are many very high quality products out there that work fantastically with great results, that are safe and way less expensive.
And do not believe everything you read. Anyone can tout something as fantastic when the all mighty dollar is involved. The people selling Threelac are trying to make a living selling. If you google Threelac you will see hundreds...no thousands of websites , everyone touting the product. Its a bunch of bologna. Ever single website talks about how sick they were and how they got well in weeks. If it sounds too good to be true, it is.
In addition, in the time I have been on this board, I have never heard of a single person getting better using it. And we are all candida sufferers here.
I am guessing you are new to the whole arena and just began searching out candida cures. Because that is precisely when I found Threelac. And just because all these websites exist does not make it a good product.
Sorry, Threelac just really urks me, taking advantage of the sick like that.
Your best bet would be to pick the brains of those on this board. We have taken it all, tried it all, done it all.