You're Not Bad at Taking Supplements. You're Just Running Deprecated Dependencies.

You know that feeling when you spend three hours debugging something, only to discover you were running an outdated version of a library?

That's most people's supplement routine.

The right package. The wrong version. Zero output. And no error message telling you why.

The Version Problem

When a label says "Magnesium 300mg" — that's just the package name. The version is what matters.

magnesium-oxide@1.0.0 // absorption: ~4%. Don't use in production.
magnesium-glycinate@3.2.0 // absorption: significantly better. Stable.

Same nutrient. Completely different bioavailability. Most cheap supplements ship with the deprecated version because it's cheaper to produce and nobody reads the changelog.

Same issue across the stack:

vitamin-d2 → deprecated. Use vitamin-d3
folic-acid → breaks for ~40% of users with MTHFR variants. Use methylfolate
cyanocobalamin → legacy B12. Use methylcobalamin
The Configuration Problem

Even the right package misconfigured will underperform.

Vitamin D3 is fat-soluble. Call it without a fat-containing meal and you're passing null to a required parameter. Silent failure.

Magnesium + Calcium taken together compete for the same absorption pathway. Classic race condition. Take them separately.

Omega-3 oxidizes over time. A rancid capsule isn't a no-op — it's actively throwing errors. Check your dependencies before shipping them to your bloodstream.

The Registry Problem

npm has quality packages and abandonware. The supplement industry is the same.

What separates reliable packages from junk:

✅ Third-party audit logs (independent lab testing)
✅ Explicit versioning (ingredient forms listed clearly)
✅ Clean dependencies (minimal fillers and additives)
❌ Heavy marketing, vague claims, celebrity endorsements

Brands built under strict regulatory environments — like German brands such as Sunday Natural, available in Ukraine via sunday.co.ua — tend to meet these standards by default. Their home market requires it.

The Recommended Stack
morning: vitamin-d3 (4000 IU) + k2-mk7 (100mcg) // run with fatty meal
midday: omega-3-epa (1000mg+) // check for oxidation
evening: magnesium-glycinate (400mg) // 30min before sleep

No exotic dependencies. No bloated bundles. Just a minimal, well-documented stack that actually does what it says.