Jennifer Berman MD
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Berman Supplements · Foundational

Vitamin D Plus K

The two vitamins everyone tests low for — paired in the active forms your body actually uses.

Vitamin D Plus K
Foundational

Why both vitamins.

Vitamin D3 without K2 is the most common mistake in supplementation. D3 raises blood calcium; K2 (specifically the MK-7 form) is what tells calcium where to go — into the bones and teeth, not into the arteries and soft tissue.

We dose 5,000 IU of D3 with 90mcg of K2 MK-7. That is enough D for most patients to move into the optimal 50–80 ng/mL range over a few months, paired with the K cofactor that makes the calcium handling actually safe.

If you have not had a vitamin D level checked recently, do that. Most adults in the US run deficient. This bottle exists because the standard 1,000 IU sold at retail is, for almost everyone, a placebo.

Form
Softgel
Dose
1 softgel daily, with food
Quantity
60 softgels · 60-day supply
Sourcing
US-manufactured, GMP-certified
$60.00USD · single bottle
Free US shipping over $150
Why this exists

Two vitamins, never separate.

Pairing D and K is not novel — it is the literature. It is also rarely done, because most brands buy the cheaper synthetic K1 if they bother with K at all. K1 does not move calcium the way K2 MK-7 does.

One capsule, every morning, with food that has some fat in it. Both vitamins are fat-soluble.

What's inside

The full ingredient deck.

  • Vitamin D3 (cholecalciferol) — 5,000 IU (125mcg)
  • Vitamin K2 (MK-7, menaquinone-7) — 90mcg
  • Organic olive oil — carrier

Sample formulation · See product label for current values

Also on the shelf

Often paired with this.

Hormone Balance Essentials
Foundational

Hormone Balance Essentials

DIM, Vitamin D+K, and Probiotic Plus — the starter stack we hand to women in perimenopause and beyond.

$156.90View →
DIM +
Hormone

DIM +

Cleaner estrogen metabolism. The classic perimenopause adjunct — and the most-asked-about bottle on this shelf.

$80.00View →
Libido Enhance
Libido

Libido Enhance

Maca, tribulus, and fenugreek formulated together — for the women who actually notice the difference.

$80.00View →

Ready to be heard?

N° 01 · Beverly Hills

In‑person consultation

WhereThe Berman Women's Wellness Center, Beverly HillsLength60–90 min new-patient consultIncludesWorkup · plan · in-clinic procedures available same visit
N° 02 · Anywhere

Telehealth visit

WhereSecure video · your phone or laptopLength45 min consultBest forHormones, supplements, follow-ups, second opinions
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A weekly letter from Dr. Berman

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Every Sunday, the questions my patients ask me behind the door — answered in plain language. Hormones, libido, pelvic health, the things other doctors brush past. Twenty-five years of listening to women, distilled into a five-minute read you can act on by Monday.

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