I am asking this question because supplements are now having their own tv and radio commercials. That means those businesses are leveling up huh. It really makes me wonder why those supplements are selling despite the disclaimer in the label that says – no approved therapeutic claims. It is very clear that the supplement has no proof of its claim. A phenomenon?
Since I haven't been watching much of any TV, I wouldn't know what companies are selling herbal supplements via tv commercials. But generally speaking, there are certain supplements that are known to help daily diets, since most people don't eat stuff with all the recommended vitamins, minerals, etc on a daily basis. Spring Valley and Sundown being two of those brands that you can find at places like Walmart. Though generally, if they are advertising a certain vitamin or mineral that doesn't do what it is intended for, then it would be fishy regardless.
For example, Vitamin D is great for those who don't normally get a lot of sunlight, like those who spend time indoors a ton or those who live in places like Northern Alaska, where sunlight is rare most months of the year. Vitamin D is also known to help reduce depression episodes, because your body normally creates it when you are outside in the sun, or eat foods rich in it.