Absolutely. I never recommend anyone to take vitamins indiscriminately. The whole “take massive amounts of vitamins” theory was a very bad one. In nature - in food and herbs - there are minerals, vitamins and other nutrients in balance, and there are many micr-nutrients - let’s call them “unknown vitamins” that balance the “known vitamins”.
One can very easily disrupt the body’s balance by taking large amounts of vitamins indiscriminately, and unless a person as a serious condition wherein they can’t eat enough food, it is childishly easy to get all the required vitamins and minerals in food (and herbs). Some vitamins store in the liver, ones that are fat soluble, and can cause health problems as they are not easily eliminated. Taking large amounts of Vit C means the body eliminates the excess required via urination, and a lot of Vit C can cause excess acid, causing (in my case, years ago) painful ulcers.
The only vitamins I would ever recommend are those actually made from food; almost all vitamins are synthesized, industrial products, and about 95% are made in China.
As far as a smorgasbord of herbs, they also need to be used with intelligence and care; but because it is hard to take large amounts of herbs, there is sort of a built in safety thing. Sort of. And even herbs that are said to be good for this/that/the other thing, work differently on different people.
I knew a woman decades ago who was on a big detox kick, and took tons of golden seal (as well as a very restricted diet) and she died at a young age. She starved and poisoned herself to death.
Antibiotic/antiviral/antifungal herbs should be taken with especial care and caution, and only for short periods of time, to take care of a particular infective condition. They are not long term tonic or spportive herbs, just as one should not take pharmaceutical antibiotics for a long time.
The best way, in my view, to learn about herbs is to read books about herbs, written by practitioners who use them. Online info can be interesting, but knowing the source of that info is very important.
Any info from sellers should be taken as advertising copy, one should always look for supporting evidence elsewhere from someone or some place that is not making money on that product/herb/ etc.
Also, any place that sells herbs has to be cautious about claims due to FDA regulations.
If someone wants to start taking some herb or herbs, a good way is to read about herbs, find one or two that seem useful, and try regularly for a while Although generally herb formulas are more effective, that’s a good way to start. Check for reactions, and improvements.
Of course some herbs one takes only as needed; herbs for constipation or diarrhea, for instance. And some herbs used as beverage teas are generally safe to take whenever desires, like peppermint, chamomile, cornsilk, hibiscus, lemongrass, lemon balm, and many more. They have therapeutic benefit but taken as a drink can almost never cause any problems. I say “almost never” because I suppose one in a million people could have some adverse reaction.