I take prescribed VitD3 plus calcium as I have osteoporosis but also take VitK2 to make sure the calcium goes to my bones not my arteries.
Also take collegen 1 & 3 fir skin, hair and nails. The main benefit of this is that I’m on steroids and used to get those horrid purple bruises at the slightest knock. The collegen stopped that within days. If I run out and miss a few days I get a bruise so I know the collegen capsules work. They also contain Vit C as that helps to absorb the collegen.
When I remember I’ll take an Omega 3 but not every day, also occasionally a B12 as I don’t eat meat but do eat eggs, dairy and fish. That’s about it. In the past I’ve tried turmeric, cranberry and a few others that I can’t remember.
Almost forgot, I do religiously take a probiotic and Inulin a prebiotic, in my bedtime hot milk. Since doing that I sleep better and my IBS problems have improved a lot.