• A white bottle of Nutrabio Vitamin D3 dietary supplement with a white cap, featuring a green and white label.
  • A white bottle of Nutrabio Vitamin D3 dietary supplement shown next to its supplement facts label on a dark gray patterned background.
  • Front and back views of a Nutrabio Vitamin D3 supplement bottle label, showing product details, serving suggestions, and supplement facts on a white background.
  • Promotional graphic with the text 'FOREVER & A Day GUARANTEE TRY IT RISK-FREE' and 'Love it, or we'll make it right. Any Product.
  • A digital graphic with the text 'We let our E.T.
1 6
The image is too blurry and cropped to clearly identify any objects or details.

Rewards Program

Earn 14 loyalty points with this purchase.

Free sign up Login
Forever Returns

We've got your back FOREVER, no matter what. Whether it's been a day or a decade, you can exchange your product anytime, anyplace, and for ANY reason.
Full Transparency

It's transparency your way. With just a click on your mobile or desktop, you can easily check the test results of your supplement bottle.
CheckMySupps

All of our supplements are held to the highest quality and purity standards, verified through rigorous third-party testing to ensure label accuracy.

Vitamin D (5000 IU) - 90 Servings

Vitamin D (5000 IU) - 90 Servings

Strengthen your bones, support healthy immune function, and keep your muscles working the way they should with NutraBio Vitamin D3. A fully dosed 5,000 IU of the same form of vitamin D.

Also available in Vitamin D (2000 IU).
Notify Me When Available
Vitamin D (5000 IU) - 90 Servings
$14.99
$14.99
NUTRABIO QUALITY GUARANTEE

NUTRABIO QUALITY GUARANTEE

Made in the USA • Third-Party Tested • Fully Transparent Labels • Fully Dosed Formulas

Strengthen your bones, support healthy immune function, and keep your muscles working the way they should with NutraBio Vitamin D3. A fully dosed 5,000 IU of the same form of vitamin D.

Description

How To Use

Key Ingredients

Dietary Restrictions

Delivery & Returns

SKU: 51445
View full details

Essential Bone & Immune Health Support

Vitamin D works quietly behind nearly everything that keeps you moving. It helps your body absorb the calcium your bones depend on, supports the immune cells that protect you every day, and plays a role in the muscle function behind every step you take. Keeping your levels where they should be is one of the simplest things you can do for how you feel today and how you age over time. A daily 5,000 IU serving of D3 makes that consistency effortless, through every season and every schedule.‡

5000 IU
Vitamin D3
90
Day Supply
ZERO
Fillers or Excipients

How NutraBio Is Better

Fully transparent labels, no proprietary blends, and third-party testing on every batch — so you always know exactly what you're getting. Here's how NutraBio compares.

A white bottle of Nutrabio Vitamin D3 dietary supplement with a white cap, featuring a green and white label.NutraBio
An image of a blank pill bottle with two capsules next to it. Other Brands
High-Potency
Highly Bioavailable
3rd-Party Batch Tested
In-House Manufactured

The Science-Backed Edge

Every ingredient is chosen with purpose and backed by science to deliver meaningful results. Whether it’s wellness or performance, each formula is fully dosed and built with innovation to help your body function at its highest potential.

A woman in black athletic wear and white sneakers does a side lunge stretch on a blue mat outdoors, with a green hedge wall behind her and yoga blocks and resistance bands nearby.

Live Without Compromise

We are dedicated to helping you achieve real results by ensuring every product is made with the highest-quality ingredients and uncompromising standards. Our commitment to excellence is built to help you reach your potential and live without compromise.

  • A minimalist black outline icon of a dog bone centered inside a light gray circular border on a white background.

    Strong, Healthy Bones

    Vitamin D helps your body absorb and use calcium, the mineral your bones are built from. Consistent intake supports bone strength and density at every age.‡

  • Medical cross symbol inside a shield.

    Healthy Immune Function

    Your immune cells rely on vitamin D to do their job well. A steady daily supply helps keep your natural defenses ready, especially during the colder months.‡

  • Icon showing three parallel, wavy lines inside a circle.

    Muscle Strength and Function

    Vitamin D supports normal muscle function and strength, helping you stay active, balanced, and capable in everything you do.‡

  • A simple black line drawing of a smiling face inside a circular border.

    Positive Mood

    Shorter days and less sunlight can affect how you feel. Maintaining healthy vitamin D levels supports a positive mood and overall sense of wellbeing.‡

  • Heart icon inside a circle.

    Heart Health

    Directs calcium metabolism and vessel function to support cardiovascular wellness.

  • A minimalist black circular spiral icon inside a light gray circle on a white background.

    Healthy Aging

    Bone density and muscle strength are two of the biggest factors in staying independent and active as you age. Vitamin D supports both, so you can keep doing what you love for years to come.‡
A man with a beard and muscular build stands in a gym, wearing a black sleeveless shirt and a large black NutraBio backpack with patches. Gym equipment and colorful wall art are visible in the background.

Essential Bone, Immune & Total Health Support

Bone and Muscle Strength

Vitamin D is the key that lets your body use calcium, and it supports the muscles that move and protect your frame. Strong bones and capable muscles are the foundation of an active life.‡

Immune Health

Your immune system works around the clock. Vitamin D helps it respond the way it should, giving your body steady support through busy schedules and changing seasons.‡

Healthy Aging

The habits you keep today shape how you feel decades from now. Daily vitamin D supports the bone, muscle, and immune health that keep you moving well for life.‡

Overall rating: 4.96875 / 5 from 32 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["quality","supplement","capsules"].

Review highlights

Reviews

Great

"Very very very good no complaints"

— Trevardo (5/5)

D3

"I assume it does what the research says so I take it. Seems to make my hair and nails grow faster."

— Smalt (5/5)

Great

"All Good great luv it"

— Edward (5/5)

Works great

"I had a vitamin D deficiency. Started taking this. All good according to my drs."

— Eric S. (5/5)

d3

"good stuff"

— czegledi (5/5)

Perfect

"Small capsule that is extremely easy to swallow that is gluten free. Rice flour is the only extra ingredient so this is the purest form of vitamin D 3 that I have ever seen. No weird taste, no color additives. Just what you need."

— Pinchot (5/5)

Vitamin D-3 5000IU review

"Vitamin D-3 5000IU. No other ingredients, besides the capsule it’s in. It’s one of the most studied vitamins and it is what it is. Quality supplement."

— John A. (5/5)

Much Needed

"Great Supplement"

— Virgil R. (5/5)

Best Supplements Ever

"Doubt I will purchase vitamins from anywhere else."

— Raing (5/5)

Great value for this product!

"Great value for this product! Will be purchasing this again!"

— Ahlgrim (5/5)

Q&A

Frequently Asked Questions

What is NutraBio Vitamin D3 5,000 IU?

NutraBio Vitamin D3 5,000 IU is a daily vitamin D supplement that delivers 125 mcg of vitamin D3 as cholecalciferol in one vegetable capsule, providing 625 percent of the Daily Value. Part of the NutraBio Wellness Series, it supports bone and immune health and comes in a 90 capsule bottle for a 90 day supply. It is made in NutraBio's own cGMP inspected facility in Middlesex, New Jersey.

Is vitamin D3 better than vitamin D2?

Yes, research shows vitamin D3 is more effective than vitamin D2 at raising and maintaining healthy vitamin D blood levels. Vitamin D3 (cholecalciferol) is the same form your skin produces from sunlight, while vitamin D2 (ergocalciferol) comes from plant and fungal sources. NutraBio Vitamin D3 uses cholecalciferol exclusively for this reason.

Is 5,000 IU of vitamin D3 a day too much?

5,000 IU is a higher potency daily dose that many adults use to maintain healthy vitamin D levels, but the right amount depends on your individual levels. Individuals taking more than 2,000 IU of vitamin D per day are recommended to have their vitamin D blood levels monitored, so talk with your physician about testing. NutraBio Vitamin D3 is not for use by individuals who are pregnant, nursing, or under 18.

When is the best time to take vitamin D3?

The best time to take vitamin D3 is with a meal that contains some fat, since vitamin D is fat soluble and is absorbed better alongside food. Take 1 capsule of NutraBio Vitamin D3 daily, preferably with food. Many people take it with breakfast or lunch so it becomes part of their daily routine.

Is NutraBio Vitamin D3 third party tested?

Yes, every batch of NutraBio Vitamin D3 is third party tested for purity and potency, and independent lab results are available at CheckMySupps.com. The label is fully disclosed: vitamin D3, rice flour to fill the capsule volume, and a vegetarian capsule. It is made without gluten, lactose, artificial colors, flavors, or sweeteners.