Best Prohealth in 2026

50,000 IU Vitamin D3

This product provides vitamin D3 or cholecalciferol, which is the same type of vitamin D your body makes when exposed to sunlight, as well as the version used to fortify foods.

Ingredients meet US Pharmacopeia standards.

BIOLOGICALLY ACTIVE FORM OF RESVERATROL - Regular resveratrol is composed of 50% trans-resveratrol and 50% cis-resveratrol. ProHealth's Trans-Resveratrol delivers 1000 mg of pure, natural trans-resveratrol per serving.

BOOSTS NMN EFFECTIVENESS - NMN and Trans-Resveratrol work synergistically in many ways. They have been likened to the operation of a car, with NMN as the fuel and Trans-Resveratrol as the accelerator pedal.

INCREASED ABSORPTION - Regular trans-resveratrol is only about 1% absorbable. Our special absorption matrix formulation contains a proprietary synergistic blend of organic co-factors, including quercetin, red wine extract, green tea extract and BioPerine, which can improve absorption and C-max blood levels up to 1544%.

285 TIMES MORE BIOAVAILABLE than regular curcumin. Each capsule provides 500 mg of Longvida Optimized Curcumin Extract.

FEATURING CUTTING-EDGE SLCP TECHNOLOGY for enhanced absorption and delivery into blood and tissues. Developed in collaboration with elite neuroscientists at UCLA.

POWERFUL ANTIOXIDANT promotes joint health and flexibility

SUPPORTS COGNITIVE VITALITY AND HEALTHY AGING PROCESSES - Ca-AKG activates the AMPK pathway, which senses and maintains cellular energy balance by supporting the function of your cells' main energy hubs (the mitochondria)

REPLENISHS DIMINISHING AKG LEVELS - Alpha-ketoglutarate (AKG) is a compound that is created naturally in the body but tends to diminish with age. Replenishing with Ca-AKG may help support healthy energy production, bone strength and metabolic function as you age.

VITAL COMPONENT OF THE KREB'S CYCLE - Ca-AKG is involved in stimulating protein synthesis and energy production in the body as a vital component of the Kreb's cycle - which creates ATP (energy) from food.

285 TIMES MORE BIOAVAILABLE than regular curcumin. Each tablet provides 1,000 mg of Longvida Optimized Curcumin Extract.

FEATURING CUTTING-EDGE SLCP TECHNOLOGY for enhanced absorption and delivery into blood and tissues. Developed in collaboration with elite neuroscientists at UCLA.

POWERFUL ANTIOXIDANT

285 TIMES MORE BIOAVAILABLE than regular curcumin. Each tablet provides 1,000 mg of Longvida Optimized Curcumin Extract.

FEATURING CUTTING-EDGE SLCP TECHNOLOGY for enhanced absorption and delivery into blood and tissues. Developed in collaboration with elite neuroscientists at UCLA.

POWERFUL ANTIOXIDANT promotes joint health and flexibility, and supports a healthy inflammatory response.

FDA food grade 100% titanium (Ti)

Tasteless, odorless, does not corrode, is non-allergenic

Great for hiking, camping or everyday home use

Potent immune support and antioxidant protection

Support cardiovascular health

Antioxidant properties may support normal cholesterol levels

FDA food grade 100% titanium (Ti)

Tasteless, odorless, does not corrode, is non-allergenic

Great for hiking, camping or everyday home use

Immune, muscle, teeth and bone health support supplement: contains one 360 count bottle of Nature Made Extra Strength Vitamin D3 5000 IU (125 mcg) Softgels for a 360-day supply

Nature Made Vitamin D 5000 IU softgels help improve calcium absorption, support bone health, teeth health, muscle health, and provide immune support

This high dose Vitamin D 3 product is for those with higher Vitamin D needs and/or deficiency, as determined by a healthcare professional (1)

Just one drop a day

Specifically designed for breastfed babies

Two ingredients: 400 IU of pure vitamin D3 and fractionated coconut oil

BETTER TOGETHER: Known as the "sunshine vitamin," Vitamin D3 helps maintain strong bones by helping you metabolize calcium and supports a healthy immune system. Added Vitamin K2 helps ensure that calcium gets deposited in your bones where it's needed, and protects arteries from calcification. Vitamins D & K work better when taken together.

VEGAN FORMULA: Our Vitamin D and K supplements are made with VegaDELight vegan D3, a patented plant based form of Vitamin D3 from lichen and MenaQ7, a patented form of Vitamin K2 from chickpeas. Our easy-to-swallow Vitamin D3 K2 PlantGel capsules are an easy way to add these two essential micronutrient vitamins to your diet.

PREMIUM QUALITY: Sports Research is proud to offer products using only the best ingredients available so you can have total peace of mind in the supplements you are taking. Our 100% plant based Vitamin D with Vitamin K supplement is certified vegan, non-GMO, and free of soy, gluten, gelatin, and carrageenan - all formulated with cold-pressed organic virgin coconut oil.

HIGHEST POTENCY/HELPS MAINTAIN STRONG BONES*: Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food.

SUNSHINE VITAMIN/SUPPORTS IMMUNE SYSTEM*: As more people avoid sun exposure, vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply.

CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Halal, Kosher Contains Gelatin

MOST ACTIVE FORM: NatureWise Vitamin D3 in organic olive oil helps to support the health of teeth and bones, provide immune support, and promote proper muscle function.*

Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery

RECOMMENDED DOSE FOR KIDS & MOMS: 1000IU is the recommended amount of vitamin D3 for growing children and expecting mothers, but our product is intended to safely encourage calcium absorption and immune system strength in any user.*

Immune, muscle, teeth and bone health support supplement: contains one 90 count bottle of Nature Made Vitamin D3 2000 IU (50 mcg) Softgels for a 90-day supply

Nature Made Vitamin D 2000 IU softgels support bone health, teeth health, muscle health, and provide immune support

These Vitamin D 2000IU softgels help improve calcium absorption and contain 50mcg of Vitamin D 3, the body’s preferred form of Vitamin D

IMMUNE SUPPORT (1): Vitamin D3 is an essential nutrient for immune support. (1) Each serving contains 2000 IU of Vitamin D for immune benefits and may assist the immune system by helping to regulate T and B-lymphocytes (1)

SUPPORTS STRONG BONES (1): In addition to immune support, getting a sufficient amount of Vitamin D is critical to building and maintaining strong bones in adults. (1) It is essential for calcium absorption to help support healthy bones (1)

YEAR-ROUND SUPPORT: Vitamin D3 supplements contain the same form of Vitamin D that is naturally formed in the body through exposure to sunshine. Nature’s Bounty Vitamin D3 helps support the production of Vitamin D all year long (1)

200 count bottle of Caltrate 600 Plus D3 600 mg Calcium and Vitamin D Supplement Tablets

Caltrate bone supplements offer the highest level of vitamin D3 per tablet among leading calcium supplement brands (1)

Caltrate calcium and vitamin D tablets help support strong bones and everyday activities like muscle contractions, blood clotting and nerve function (2)

Immune, muscle, teeth and bone health support supplement: contains one 250 count bottle of Nature Made Vitamin D3 2000 IU (50 mcg) Softgels for a 250-day supply

Nature Made Vitamin D 2000 IU softgels support bone health, teeth health, muscle health, and provide immune support

These Vitamin D 2000IU softgels help improve calcium absorption and contain 50mcg of Vitamin D 3, the body’s preferred form of Vitamin D

RAW VITAMIN D 5000 IU: Whole food nutrition, specifically formulated with 5,000 IU of fat-soluble Vitamin D3 delivered in a whole food lipid base of high Omega-9 Organic green cracked wall chlorella – plus live probiotics & enzymes to promote absorption

THE SUNSHINE HORMONE: Vitamin D supports memory, concentration & proper cell replication; Easily metabolized D3 is preferred over D2 since it's in the form that comes from the most natural source possible―sun-kissed skin and foods like salmon & sardines

ONCE DAILY VITAMIN D3 FOR IMMUNE SYSTEM HEALTH: Our vegetarian Vitamin D supplement supports bone, joint, breast & prostate health as well as immune health, with 625% Daily Value of vitamin D3—the natural form; Available in a 60-day supply

HIGH POTENCY - Our vegetable based Vitamin D3 50,000 iu helps to support teeth and bone health, provide immune support, and promote healthy muscle function in adult men and women. Available in multiple potency options and savings bundles from Forest Leaf supplements.

ESSENTIAL VITAMIN D - Known as the, "sunshine vitamin" most of us don't get enough sun exposure for proper Vit D3 levels. Avoid the sun's potentially damaging UV rays and help support immune function, bone and teeth health, and muscle function all year long.

EASY TO SWALLOW - Our special high potency capsules are smaller sized to make them easier to swallow, without sacrificing Vitamin D-3 levels. Save BIG compared to your local pharmacy and enjoy an easier to swallow high potency encapsulation for your daily dose of Vitamin D.

HIGH POTENCY D3: Add sunshine to your day with Carlyle Vitamin D3 10,000 IU per serving softgels!

DAILY D3: Get a powerful dose of the sunshine nutrient with non-gmo quick-release softgels

ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living

Immune, muscle, teeth and bone health support supplement: contains one 300 count bottle of Nature Made Vitamin D3 1000 IU (25 mcg) Softgels for a 300-day supply

Nature Made Vitamin D 1000 IU softgels support bone health, teeth health, muscle health, and provide immune support

These Vitamin D 1000IU softgels help improve calcium absorption and contain 25mcg of Vitamin D 3, the body’s preferred form of Vitamin D

Immune, muscle, teeth and bone health support supplement: contains one 180 count bottle of Nature Made Vitamin D3 1000 IU (25 mcg) Softgels for a 180-day supply

Nature Made Vitamin D 1000 IU softgels support bone health, teeth health, muscle health, and provide immune support

These Vitamin D 1000IU softgels help improve calcium absorption and contain 25mcg of Vitamin D 3, the body’s preferred form of Vitamin D

Immune, muscle, teeth and bone health support supplement: contains one 180 count bottle of Nature Made Extra Strength Vitamin D3 5000 IU (125 mcg) Softgels for a 180-day supply

Nature Made Vitamin D 5000 IU softgels help improve calcium absorption, support bone health, teeth health, muscle health, and provide immune support

This high dose Vitamin D 3 product is for those with higher Vitamin D needs and/or deficiency, as determined by a healthcare professional (1)

HIGH POTENCY/SUNSHINE VITAMIN: Highly-absorbable liquid softgel form of vitamin D-3

Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery

VITAMIN D: Supports healthy immune system function and is essential for achieving and maintaining optimal bone mineral density*

POTENT IMMUNE SUPPORT: Vitamin D3 is a more potent version of Vitamin D and offers an easy way to support immune health. (1) Nature’s Bounty 1000 IU Vitamin D3 softgels may assist the immune system by helping to regulate T-lymphocytes and B-lymphocytes, which are important components of the adaptive immune response (1)

STRONG, HEALTHY BONES: Getting enough Vitamin D is essential for calcium absorption, which helps support bone health in adults. (1) Nature’s Bounty Vitamin D3 softgels supplement the Vitamin D your body needs to build and maintain strong bones (1)

THE SUNSHINE VITAMIN: Vitamin D3 by Nature’s Bounty contains the same form of Vitamin D that your body naturally produces through exposure to sunshine. Many adults don’t get enough sun due to an indoor lifestyle or during winter months, but Nature’s Bounty Vitamin D3 helps get you the Vitamin D you need for overall wellness (1)

One 150 count bottle of vitafusion Vitamin D3 Gummy Vitamins, peach, blackberry and strawberry flavored supplements, enough Vitamin D gummies for 75 days

Vitamin D aids in the absorption of calcium for teeth and bone health and offers immune support (1), ideal as daily vitamins

Each two-gummy serving of these gummy vitamins for adults contains 50 mcg (2,000 IU) of high-potency Vitamin D, 250 percent of the recommended daily value, and offers a delicious, natural flavor in every bite​

GET YOUR ESSENTIAL DAILY DOSE: The Endocrine Society recommends 1,000-2,000IU of Vitamin D per day to maintain healthy bones, teeth, muscles and immune function.

MOST ACTIVE FORM: NatureWise Vitamin D3 delivers the same biologically active form of Vitamin D that is naturally produced in the body from sunlight — without the risky UVB exposure.

SUPERIOR ABSORPTION: Vitamin D is a fat-soluble vitamin that requires dietary fat for the body to absorb it. Our Vitamin D3 is delivered in certified organic olive oil, a healthy fat source that improves bioavailability.

NEW SOFTGEL SHELL: Sports Research Vitamin D3+K2 Plantgel capsules now contain added Turmeric Root Powder in the outer softgel shell. This added plant-based yellow color helps protect the active ingredients inside against photo-degradation that may occur from exposure to UV light. While the appearance has changed, we can assure you that our Vitamin D3+K2 still contains the same great ingredients you know and love

BETTER TOGETHER: Known as the "sunshine vitamin," Vitamin D3 helps maintain strong bones by helping you metabolize calcium and supports a healthy immune system. Added Vitamin K2 helps ensure that calcium gets deposited in your bones where it's needed, and protects arteries from calcification. Vitamins D & K work better when taken together

VEGAN FORMULA: Our Vitamin D and K supplements are made with VegaDELight vegan D3, a patented plant based form of Vitamin D3 from lichen and MenaQ7, a patented form of Vitamin K2 from chickpeas. Our easy-to-swallow Vitamin D3 K2 PlantGel capsules are an easy way to add these two essential micronutrient vitamins to your diet