Whole foods
Fish Oil
Calcium magnesium
Vitamin D
Collagen C
Vitamin C
Multi Vitamin
CoQ10
Iron (I am anemic)
GABA
5HTP
The list is long, but they each have a good reason, I don't buy stuff for no reason just to blow money or follow a fad.
Also, people will call me out on broscience here, but I believe the brand matters in some cases. Whole Foods GABA 750mg capsules was giving me effects that were not present with other generic brands.
When I used to have sleeping problems, melatonin used to do absolutely zilch. But when I bought a high quality melatonin special ordered from whole foods, it finally gave me relief I was desperately seeking. I'm not sure why. It must have to do with how it was pharmacologically produced and how it is delivered to the receptors. Also, I beg you, please don't tell me it was placebo. I am extremely sensitive and when something does work or doesn't work, I know it. I work in the medical field and I'm not naive to these things (throwing it out there because I have heard that argument ad nauseum)
If you're buying something like vitamin C or D or E, generic brands are usually fine. Get them cheap at your local supermarket or pharmacy. I'm all for saving cash. Aren't we all?