I was just listening to an ad on tv for Zicam cold remedy stuff.  The ad says "shorten your cold with Zicam".. 

Well, seeing as how you have no idea how long that cold would have lasted with or without the Zicam, I'd say that's a pretty safe bet, wouldn't you!! 

This is how advertising works. 

Whether it's something from a doctor or something from the "natural health world" it's all a scam.  I went out into my vitamin bin today and tossed out a whole bunch of bottles of vitamins, kept the Vitamin D3, K2, Fermented Fruits, Fermented Veggies, and now that cupboard has a lot more room.  I guess time will tell when I go to my next Dr. apptment in April of 2025 and have my bloodwork done.  If I'm low on something, it's usually something like sodium (I drink a LOT of water and tend to pee a lot) so I am often low on sodium.  I don't order that stuff on tv (constant commercials) called Balance of Nature because I'm not sure it's organically sourced, and I'm also not sure it's fermented, which makes all the difference in the world.

Right after the stroke in 2019 my heart doctor told me to be sure to add sodium to my diet in many forms.  I had been using Himalayan Pink Salt (which I have since discovered does not contain the all important sodium) although I do like the fact that it supplies numerous other benefits that you won't get with regular, awful "table salt".  So, until April's check-up, I'll keep doing what I've been doing minus a few useless vitamins.  I think the minerals are probably more important (and lacking in today's foods) anyway. 

You should go online and compare the differences between what vitamins do for the human body and what minerals do for the human body.   It's an interesting
venture.