10 Best Vitamin D3 By Life Extension of 2025

Tested and Reviewed: Top 10 Vitamin D3 By Life Extension deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Life Extension

Life Extension Vitamin D3 125 mcg (5000 IU), Bone Health, Brain Performance, Immune System Support, Gluten-Free, Non-GMO, Once Daily, Two-Month Supply, 60 Softgels

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Editor's bottom line:

“This vitamin d3 by life extension is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Daily dose of vitamin d3 - We recommend that adults get between 125 mcg and 200 mcg of vitamin D3 every day. That makes a vitamin D3 supplement like this one the perfect complement to your multivitamin. Support bone, brain and immune health with just one softgel a day.
Bone & brain health - Vitamin D helps get calcium into your bone matrixthe lattice-like structure that gives your bones their strength and rigidity. Vitamin D is good for your brain, too: healthy levels of vitamin D3 have been shown to correspond to better cognitive health scores as you age!
Immune health & supporting already-healthy blood pressure Vitamin D3 plays a critical role in immune function. It also promotes endothelial health and can help maintain already-healthy blood pressurewhich makes getting enough daily vitamin D3 a really, really good idea!
Ingredients matter We use the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
Live your healthiest life - For over 40 years, weve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Thats why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

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Picked by 397 people today

9.5

Life Extension

Life Extension Vitamin D3 5000 IU, 120 Softgels, 125mcg

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Main Highlights

120 SOFTGEL SIZE: Life Extension Vit D Supplement - 5000 IU (125 mcg) - 120 Soft Gels
120-DAY SUPPLY: Each bottle contains a 120-day supply when taken according to the directions on the bottle. Directions: Take one (1) softgel daily with food, or as recommended by a healthcare practitioner.
TRUSTED SOURCE: Made in the USA - LEF has been around for over 40 years
BENEFIT: Essential for Maintaining Healthy Bone Growth and Density*
NON-GMO: Add to your cart because you deserve the best life

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9.5

Life Extension

Life Extension Vitamin D3 25 mcg (1000 IU), Immune System Support, Bone Health, Whole-Body Health, Value Size, Gluten-Free, Non-GMO, 250 softgels

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Main Highlights

Whole-body health all-star Your body uses vitamin D to keep you healthy and thriving. This supplement delivers 25 mcg of cholecalciferol (vitamin D3), a form thats more efficient at maintaining healthy D levels than other vitamin D supplements.
Immune system and heart health support Vitamin D3 helps your body combat everyday and seasonal immune challenges, encouraging a robust immune response. Vitamin D benefits heart health, and endothelial health.
Bone & brain health Vitamin D helps get calcium into your bones, helping them maintain their strength and rigidity. Vitamin D3 is good for your brain too: healthy D3 levels have been shown to help maintain cognitive abilities and overall brain health!
Ingredients matter We use the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
Live your healthiest life We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. Thats why so many of our formulas feature specific ingredients and amounts based on scientific studies.

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9.2

Life Extension

Life Extension Vitamin D3 5000 IU, 120 Softgels (Pack of 2)

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Main Highlights

PACK OF 2: LifeExtension Vit D Supplement 125 mcg (5,000 IU) - 120 Soft Gels
240-DAY SUPPY: This listing for Life Extension Vitamin D3 5000 IU, 120 Softgels (Pack of 2) contains a 240-day supply when taken according to the directions on the bottle. Directions: Take one (1) softgel daily with food, or as recommended by a healthcare practitioner.
TRUSTED SOURCE: Made in the USA - LEF has been around for over 40 years
THE SUNSHINE VITAMIN
GET STARTED TODAY: Add to your cart because you deserve the best life

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9.0

Life Extension

Life Extension Vitamin D3 175 mcg (7000 IU), Immune System Support, Bone Health, Brain Performance, Gluten-Free, Non-GMO, Once Daily, Two-Month Supply, 60 softgels

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Main Highlights

D vitamin for whole-body healthYour body uses vitamin D to keep you healthy and thriving. And while your skin makes vitamin D when its exposed to sunlight, it shouldnt be your only source. This high-potency vitamin D supplement delivers 175 mcg of cholecalciferol (vitamin D3), a form of vitamin D thats more efficient at maintaining healthy levels of this essential vitamin.
Immune system and heart health supportVitamin D3 helps your body combat everyday and seasonal immune challenges, encouraging a robust immune response. Vitamin D also promotes heart health, endothelial health which makes getting enough daily vitamin D a must.
Bone & brain healthVitamin D helps get calcium into your bones, helping them maintain their strength and rigidity. Vitamin D3 is good for your brain too: healthy D3 levels have been shown to help maintain cognitive abilities and overall brain health!
Ingredients matterSourced using only the finest raw ingredients with the purity and potency your body deserves. The majority of our products are non-GMO, gluten-free and manufactured in the USAand a Certificate of Analysis is available for every product we produce.
Live your healthiest lifeFor over 40 years, weve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Thats why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

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8.8

Life Extension

Life Extension Vitamin D3 125 mcg (5000 IU), Bone Health, Brain Performance, Immune System Support, Gluten-Free, Non-GMO, Once Daily, Two-Month Supply, 60 Softgels (Pack of 2)

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Main Highlights

The information below is per-pack only
Daily dose of vitamin d3 - We recommend that adults get between 125 mcg and 200 mcg of vitamin D3 every day. That makes a vitamin D3 supplement like this one the perfect complement to your multivitamin. Support bone, brain and immune health with just one softgel a day.
Bone & brain health - Vitamin D helps get calcium into your bone matrixthe lattice-like structure that gives your bones their strength and rigidity. Vitamin D is good for your brain, too: healthy levels of vitamin D3 have been shown to correspond to better cognitive health scores as you age!
Immune health & supporting already-healthy blood pressure Vitamin D3 plays a critical role in immune function. It also promotes endothelial health and can help maintain already-healthy blood pressurewhich makes getting enough daily vitamin D3 a really, really good idea!
Ingredients matter We use the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
Live your healthiest life - For over 40 years, weve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Thats why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

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8.6

Life Extension

Life Extension Liquid Vitamin D3, 50 mcg (2000 IU), Immune System Support, Bone Health, Whole-Body Health, unflavored, Gluten-Free, Non-GMO, 29.57 ml

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Main Highlights

Whole-body health all-star Your body uses vitamin D to keep you healthy and thriving, and sunlight shouldnt be your only source. This unflavored liquid delivers 50 mcg of cholecalciferol (vitamin D3), a form efficient at maintaining healthy levels.
Immune system and heart health support Vitamin D3 helps your body combat everyday and seasonal immune challenges, encouraging a robust immune response. Vitamin D benefits heart health, endothelial health and already healthy blood pressure.
Bone & brain health Vitamin D helps get calcium into your bones, helping them maintain their strength and rigidity. Vitamin D3 is good for your brain too: healthy D3 levels have been shown to help maintain cognitive abilities and overall brain health!
Ingredients matter We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USAand a Certificate of Analysis is available for every one.
Live your healthiest life We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. Thats why so many of our formulas feature specific ingredients and amounts based on scientific studies.

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8.3

Life Extension

Life Extension Vitamins D and K with SeaIodine Bone Brain Thyroid Arterial Support Non GMO Once Daily Gluten Free, 60 Count

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Main Highlights

STRONG BONES, HEALTHY HEART This formula provides a potent 125 mcg of vitamin D3 which helps promote healthy cognitive function. Vitamin D, along with vitamin K, helps get calcium into your bone matrix to maintain strong, healthy bones and teeth. Vitamin D also plays a critical role in healthy immune function and vitamin K helps inhibit calcium buildup in your arteries.
CHANCES ARE YOURE NOT GETTING ENOUGH VITAMIN K You can get vitamin K1 and K2 from your diet, but most people dont get enough K-rich foods, such as leafy greens, cheese, or eggs daily. This formula provides a potent dose, 2100 mcg of Vitamin K1 and two forms of vitamin K2.
HEALTH BENEFITS OF TABLE SALT, WITHOUT THE SODIUM Iodine is essential to thyroid health. So much so, it has been added to table salt for almost 100 years. But many people avoid salt for health reasons, which can lead to inadequate iodine intake from your diet. Our formula delivers iodine from sea vegetables.
INGREDIENTS MATTER -Sourced using only the finest raw ingredients with the purityand potency your body deserves. The majority of our products are non-GMO, gluten-free and manufactured in the USAand a Certificate of Analysis is available for every product we produce.
LIVE YOUR HEALTHIEST LIFE - For over 40 years, weve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Our formulations are created using the ingredients and dosages used in the studies that inspired them, ensuring that maximum bioavailability and efficacy is achieved.

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8.1

Life Extension

Life Extension Vitamin D3 with Sea-Iodine™, 125 mcg (5000 IU) – Immune Support, Bone Health, Thyroid Health – 1 Daily, Gluten-Free, Non-GMO – 60 Capsules

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Main Highlights

INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves; This product is certified non-GMO and gluten-free; Manufactured in the USA and a Certificate of Analysis is available
Supports healthy cell differentiation and immune health
Range supports healthy bone density
Healthy blood pressure

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8.1

Life Extension

Life Extension Vegan Vitamin D3, 125 mcg (5000 IU), cholecalciferol from Algae, high-Potency Immune, Bone & Whole-Body Health, Gluten-Free, Non-GMO, 1 Daily, Vegan, 60 Vegan Capsules

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Main Highlights

Bone & brain health Vitamin D3 helps get calcium into your bone matrixthe lattice-like structure that gives your bones strength and rigidity. Vitamin D is good for your brain, too: healthy levels of vitamin D3 support cognitive health as you age.
Immune health & already-healthy blood pressure Vitamin D3 plays a critical role in immune function. It also promotes endothelial health and can help maintain healthy blood pressure that is already within the normal range.
Contains absolutely no animal byproducts Your skin makes vitamin D when its exposed to sunlight, but that shouldnt be your only source. We suggest at least 125 mcg (5000 IU) of vitamin D3 a day, the amount in each capsule of Vegan Vitamin D3.
Ingredients matter We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USAand a Certificate of Analysis is available for every one.
Live your healthiest life We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. Thats why so many of our formulas feature specific ingredients and amounts based on scientific studies.

Show Price

Our Best Overall Choice

Best Choice

9.7

Life Extension

Life Extension Vitamin D3 125 mcg (5000 IU), Bone Health, Brain Performance, Immune System Support, Gluten-Free, Non-GMO, Once Daily, Two-Month Supply, 60 Softgels

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Daily dose of vitamin d3 - We recommend that adults get between 125 mcg and 200 mcg of vitamin D3 every day. That makes a vitamin D3 supplement like this one the perfect complement to your multivitamin. Support bone, brain and immune health with just one softgel a day.
Bone & brain health - Vitamin D helps get calcium into your bone matrixthe lattice-like structure that gives your bones their strength and rigidity. Vitamin D is good for your brain, too: healthy levels of vitamin D3 have been shown to correspond to better cognitive health scores as you age!
Immune health & supporting already-healthy blood pressure Vitamin D3 plays a critical role in immune function. It also promotes endothelial health and can help maintain already-healthy blood pressurewhich makes getting enough daily vitamin D3 a really, really good idea!
Ingredients matter We use the finest raw ingredients chosen for quality and purity. The majority of our products are non-GMO, gluten-free and manufactured in the USA with globally sourced ingredients, and a Certificate of Analysis is available for each.
Live your healthiest life - For over 40 years, weve been developing advanced, effective formulas made with the highest standards and based on the latest scientific findings. We believe the answers to a healthier, richer life are within reach, and that rigorous scientific research is the path to get us there. Thats why so many of our nutritional formulas are designed using specific ingredients and amounts based on scientific studies.

Show Price

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