this is what I found. Story at-a-glance Vitamin K2 is an important fat-soluble vitamin that plays critical roles in protecting your heart and brain, and building strong bones. It also plays an important role in cancer protection The biological role of vitamin K2 is to help move calcium into the proper areas in your body, such as your bones and teeth. It also helps remove calcium from areas where it shouldn’t be, such as in your arteries and soft tissues The optimal amounts of vitamin K2 are still under investigation, but it seems likely that 180 to 200 micrograms of vitamin K2 might be enough to activate your body’s K2-dependent proteins to shuttle calcium to the proper areas If you take oral vitamin D, you also need to take vitamin K2. Vitamin K2 deficiency is actually what produces the symptoms of vitamin D toxicity, which includes inappropriate calcification that can lead to hardening of your arteries If you take a calcium supplement, it’s important to maintain the proper balance between calcium, vitamin K2, vitamin D, and magnesium. Lack of balance between these nutrients is why calcium supplements have become associated with increased risk of heart attack and stroke

Vitamin D3 50,000 IU (1250 mcg) | Once Weekly Dose | 100 Capsules (100 Weeks, Approx. 2 Years Supply) | Easy to Swallow | Bone, Muscle & Immune Support | Non-GMO, Gluten Free | Made in USA

Vitamin D3 50,000 IU (1250 mcg) | Once Weekly Dose | 100 Capsules (100 Weeks, Approx. 2 Years Supply) | Easy to Swallow | Bone, Muscle & Immune Support | Non-GMO, Gluten Free | Made in USA

Q: Many customers said they only received a 12-capsule bottle. What’s up with that?

Thank you for your question. We understand the concern. As you will note, those complaints are from over a year ago and were due to errors at Amazon's end. Amazon fulfills our products for us and they kept mistakenly shipping customers 12-count bottles instead of 100-count bottles. (You can also see this fact in the photos the customers posted - they show 12-count bottles.) We decided to no longer sell the 12-count bottle on Amazon and have all leftover 12-count inventory shipped back to us. Since then there have been no more issues. Please do let us know if ever there is an issue with one of our products. We hope this helps assuage your concerns. Sincerely, Nivagen

Q: Hi, is it equal to ip 60000 iu excipients as 60000 does not available online?

The dosage is as on the bottle: 50,000 IU. That's a weekly dosage. I am not a doctor.

Product ID: 6827952

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Details

Brand
Nivagen
Item Form
Capsule
Primary Supplement Type
Vitamin D3
Diet Type
Gluten Free
Flavor
Unflavored

💊50,000 IU weekly high potency

🦴Supports bone & muscle strength

🇺🇸Made in FDA-inspected USA facility

Frequently Bought Together

Nivagen Pharmaceuticals Inc Vitamin D3 50,000 IU Capsule (100)

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Description

☀️ Elevate your wellness game with weekly sunshine power!

SUNSHINE IN A CAPSULE - Get your daily dose of sunshine vitamin without harmful UV exposure, ideal for busy lifestyles and limited sun time.
CLEAN ALLERGY FRIENDLY - Non-GMO, gluten-free, and free from common allergens, crafted for easy swallowing and broad dietary needs.
POWER PACKED WEEKLY DOSE - One capsule delivers a potent 50,000 IU to keep your vitamin D levels optimized with minimal effort.
TRUSTED AMERICAN QUALITY - Manufactured in a CGMP-certified, FDA-inspected facility in the USA, ensuring purity and potency you can rely on.
MUSCLE BONE REINFORCEMENT - Enhances calcium absorption for stronger bones and improved neuromuscular health—perfect for active professionals 40+.

Vitamin D3 50,000 IU delivers a high-potency, once-weekly dose designed to support immune function, bone density, and muscle strength. This clean, allergen-free formula is easy to swallow and made in a US FDA-inspected, CGMP-certified facility, providing a convenient 2-year supply for consistent vitamin D maintenance.

Have a Question? See What Others Asked

Many customers said they only received a 12-capsule bottle. What’s up with that?

Are the capsules vegan?

what is K2?

Hi, is it equal to ip 60000 iu excipients as 60000 does not available online?

Reviews

L**E

Product is fine

Product is fine— the incremental increase is just unbelievable— I used to pay $7.00 a bottle!!

19.08.2025

A**R

Great value!

Excellent product--great price!!

11.07.2025

P**I

Don't be neglect in your vitamins

It's a great vitamins and much needed by most!

17.09.2025

R**B

Worked great

Brought my D-3 level into high normal range from below minimum value. Dosage 1 per week

29.08.2025

V**Y

Amazing products Vitamin D3

This Vitamin D3 has been a game-changer for me. I was constantly feeling fatigued and couldn’t figure out why. After a few months of taking this once a week, I feel so much better. The capsules are easy to swallow, no aftertaste, and I love that I don’t need to buy more every few months—the 2-year supply is perfect.

25.08.2025

K**N

Ease of use

Good Product and value for money

2.08.2025

H**I

Taking this 3 times a week to keep me feeling my best

It’s a must- look up Dr Berg or just low vitamin D don’t stick your head in the sand this is one of the best ways to heal many issues!

13.08.2025

E**O

It seems to be a good product

I haven't been able to use it as soon as I use it I will tell you

22.08.2025

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