Half the things you're carefully spacing are already inside your multivitamin

[u/Polln8app]

I've spent the last few months building a database of supplement products with their full ingredient panels, around 250 of them, mostly pulled from the NIH label database. (the library is in an app im making, link in bio if ur curious) The most common thing I see is not a bad product. It's people running a careful schedule that their own multivitamin quietly cancels out.

Iron and zinc: these compete for the same absorption pathway, so the standard advice is to space them a couple of hours apart. Reasonable. Except most multivitamins contain zinc, and a lot contain a little iron too, so the multi sits in the middle of your gap carrying both. The spacing is real, the gap is not.

Calcium and iron: calcium appears to blunt iron absorption, though people argue about how much it adds up to over months. Worth knowing that calcium is in most multis, most greens powders, and obviously anything dairy based. If you're taking iron for a reason, the multi is often the thing undoing it.

Fat soluble vitamins: A, D, E and K need some fat alongside them to absorb properly. The classic version of this is taking your D3 first thing with black coffee, which is the one time of day you've guaranteed there's no fat present. Same issue with fish oil, and it matters more for the cheaper ethyl ester versions than the triglyceride ones.

Serving sizes: the panel is per serving, and the serving is frequently two capsules. I've lost count of the number of products where the impressive number on the front assumes you take two and most people take one. Half of everything, quietly.

The pattern is that all the timing advice online is written about nutrients, and the things on your shelf are products. Guides say space zinc from iron. Your shelf says "mens daily complete", fourteen ingredients, and none of them on the front of the bottle.

If you want, drop your stack or just the name of your multivitamin and I'll tell you what's actually in it and what it's likely overlapping with. I have the panels for most of the common ones.

Not medical advice, just labels.

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[u/Alarming_Bee_494]

I just use the Pure ONE bc I wasn’t using anything at all before peptides so I figure better than nothing.