Our daily vitamin and supplement regimen includes several of these mentioned. NAC, Co-Q10, magnesium, quercetin, turmeric, green tea, omega-3, zinc, vitamin C, and B vitamins, plus others (D3, K, and a few others). This is off the top of my head. I don’t have the complete list in front of me, but it’s quite a few.
Anyone mickey mousing around with OTC stuff like st johns wort or quercitin needs to read the flockhart table to see how it effects other medicines you take .
This is even true if you got a clean bill of health on genetics but most people don’t have that information. So you look at the list and see where there may be problems based on issues with drugs in past
Here is how it works . You might be a poor metabolizer and then you add some OTC that also inhibits and you may end up with a problem. There are so many issues with drugs med school should do a better job on education on it.