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 Veg 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 Veg 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 high-potency dose

🦴Supports bone & teeth 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 - Enjoy the benefits of natural sunlight vitamin D without harmful UV exposure—ideal for those with limited outdoor time.
ONCE WEEKLY POWER BOOST - Get a full week's worth of vitamin D3 in a single, easy-to-swallow capsule—perfect for busy professionals who value efficiency.
TRUSTED AMERICAN QUALITY - Manufactured in a CGMP-certified, FDA-inspected facility in the USA, guaranteeing premium purity and potency.
CLEAN INCLUSIVE FORMULA - Free from common allergens and certified Halal & Kosher, ensuring a pure, worry-free supplement experience.
BONE MUSCLE REINFORCEMENT - Supports calcium absorption and neuromuscular health to keep you strong, active, and ready to conquer your day.

Vitamin D3 50,000 IU delivers a potent weekly dose of bioavailable vitamin D3 to support immune function, bone density, muscle strength, and overall health. This allergen-free, easy-to-swallow supplement is made in a US FDA-inspected, CGMP-certified facility, ensuring top-tier quality and safety for adults seeking consistent vitamin D support.

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

Y**E

It works

It works. I’m planning on buying it again.

31.07.2025

A**R

Great value!

Excellent product--great price!!

11.07.2025

R**A

Vitamin D3

This Vitamin D3 capsules is great. I have a habit of forgetting to take my vitamin D3 and my level has been low since 2023. I ordered this last year December to take. I had a blood test taken today and my vitamin D level is normal on the higher range. My energy levels are good, I now longer feel fatigued. The vitamins are easy to swallow and the size of the capsules are good.I will say with this vitamin, because it is a high dose have your vitamin D3 level checked by your physician just to ensure that your levels are good.

14.03.2025

L**8

Wonderful Product

Been using this for years. Wonderful product

9.06.2025

J**O

The best Vitamin D supplement

My doctor suggested this vitamin D. Take once a week and my vitamin D level is now awesome

13.07.2025

K**N

Ease of use

Good Product and value for money

2.08.2025

D**Z

Great

9.08.2025

S**H

love this item

Our favorite D3.

7.08.2025

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