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The deficiency 42% don't know they have

Low vitamin D has been linked to higher cancer mortality.† The magnesium you just bought is what activates it.

42% of adults are quietly deficient in vitamin D, and studies have tied low levels to worse cancer outcomes and a shorter lifespan. Here is the part almost nobody knows: your body cannot use vitamin D until magnesium activates it. You just bought the key. This is the lock.†

The part nobody tells you

Vitamin D and magnesium are locked together.

Your body cannot use vitamin D until magnesium activates it. Magnesium is the required cofactor for the enzymes that convert vitamin D into its usable form. And vitamin D, in turn, helps your body absorb the calcium that K2 then steers into your bones.†

Why this matters so much: in randomized trials, daily vitamin D was associated with roughly 13% lower cancer mortality.† But vitamin D does almost none of that job sitting in your body un-activated. Magnesium is the switch that turns it on, which is exactly why these two belong in the same order.

Magnesium
what you just bought
activates
Vitamin D3
now usable
+ K2
Bones
calcium, directed

It gets worse if you skip it: your body burns through magnesium to process vitamin D. So if you're low on D and take magnesium alone, you stay low on D, and if you ever take D without enough magnesium, it can drain the magnesium you just started replacing. The fix is simple: take both.†

42%
of adults are low on vitamin D†
48%
are low on magnesium too†
1
nutrient away from the pair actually working
JevityRx D3 + K2

JevityRx Vitamin D3 + K2

★★★★★ 4.9 (8,600 reviews)
  • 5000 IU Vitamin D3, a real dose that refills a deficit
  • 100mcg K2 (MK-7), sends calcium to bones, not arteries
  • Activated by the magnesium you just ordered
  • One small softgel a day, 60-day supply
$19$29.99SAVE 37%
One-time offer · this price is not available anywhere else
No re-entering payment Ships with your order 30-day guarantee
Same magnesium, two outcomes

Magnesium alone

  • Vitamin D stays low and un-activated
  • Missing immune, bone & mood support
  • Half the system, working alone

Magnesium + D3 / K2

  • Vitamin D activated and usable†
  • Immune, bone, mood & calcium support†
  • The complete foundation, done in one order
★★★★★

"Added the D3+K2 to my magnesium order on a whim. Didn't realize they needed each other. My last bloodwork was the best it's been in years."

Robert B. · Verified Customer
★★★★★

"Almost skipped this. So glad I didn't. Taking them together I actually feel the difference, energy and mood both. Wish I'd known they worked as a pair."

Danielle R. · Verified Customer

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Associations referenced (including vitamin D status and cancer mortality) reflect published observational and randomized research, including Keum et al., Annals of Oncology (2019). They do not mean this supplement prevents or treats cancer, and individual results vary.