• Vitamin D3 5,000 IU (100 Capsules)
  • Vitamin D3 5,000 IU (100 Capsules)
  • Vitamin D3 5,000 IU (100 Capsules)
  • Vitamin D3 5,000 IU (100 Capsules)
1 4

Description

VitVitamin D3 5000 IU provides high-potency cholecalciferol—the natural form of vitamin D that your body makes when your skin is exposed to sunlight.

This is the same form used to fortify milk and is much more effective than vitamin D2 (the plant-based form found in many cheaper supplements).

Why you need vitamin D3: Despite being called a "vitamin," D3 actually works like a hormone in your body.

It has receptors in almost every organ—your bones, immune cells, heart, brain, and muscles all need it to function properly.

Vitamin D is essential for calcium absorption (strong bones), immune system function (fighting off infections), muscle strength, heart health, and even regulating how your cells grow and develop.

The problem: Most people don't get enough.

Vitamin D deficiency is extremely common, especially if you live in northern climates with limited sunlight, spend most of your time indoors, have darker skin (which requires more sun exposure to produce D3), are over 40 (absorption decreases with age), or have digestive issues.

You can't get meaningful amounts from food alone—it's simply not found in enough foods in sufficient quantities.

Why 5000 IU? While the basic recommended dose is much lower, research shows many people need higher amounts to reach and maintain optimal blood levels.

The 5000 IU dose is increasingly recognized as an appropriate daily amount for adults, especially those with limited sun exposure or risk factors for deficiency.

This therapeutic dose helps restore healthy levels when diet and sunlight aren't enough.

What research shows: Studies demonstrate that adequate vitamin D supports bone density and strength, which naturally decline with age.

It also plays a critical role in immune function—low vitamin D levels are associated with increased infections and weakened immunity.

Research also shows benefits for cardiovascular health, muscle function, and healthy aging overall.

How to use

Take 1 capsule daily with a meal containing healthy fats for optimal absorption, or as recommended by your healthcare professional.

Vitamin D3 is a fat-soluble vitamin that absorbs best when taken with food.

Can be taken at any time of day as it does not interfere with sleep or circadian rhythms.

Store in a cool, dry place away from direct sunlight. Vitamin D levels should be monitored by your healthcare provider to maintain optimal range.

Ingredients

Vitamin D3 (as Cholecalciferol) 5000 IU (125 mcg), Gelatin (Capsule), Cellulose

Vitamin D3 5000 IU

ProHealth Longevity

High-potency 5000 IU vitamin D3 (cholecalciferol) supports bone strength, immune function, cardiovascular health, and healthy aging with superior absorptio

  • Superior Bone Health & Calcium Metabolism
  • Immune System Enhancement & Seasonal Resilience
  • Cardiovascular & Muscle Function Support
  • Healthy Aging & Cellular Regulation
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Description

VitVitamin D3 5000 IU provides high-potency cholecalciferol—the natural form of vitamin D that your body makes when your skin is exposed to sunlight.

This is the same form used to fortify milk and is much more effective than vitamin D2 (the plant-based form found in many cheaper supplements).

Why you need vitamin D3: Despite being called a "vitamin," D3 actually works like a hormone in your body.

It has receptors in almost every organ—your bones, immune cells, heart, brain, and muscles all need it to function properly.

Vitamin D is essential for calcium absorption (strong bones), immune system function (fighting off infections), muscle strength, heart health, and even regulating how your cells grow and develop.

The problem: Most people don't get enough.

Vitamin D deficiency is extremely common, especially if you live in northern climates with limited sunlight, spend most of your time indoors, have darker skin (which requires more sun exposure to produce D3), are over 40 (absorption decreases with age), or have digestive issues.

You can't get meaningful amounts from food alone—it's simply not found in enough foods in sufficient quantities.

Why 5000 IU? While the basic recommended dose is much lower, research shows many people need higher amounts to reach and maintain optimal blood levels.

The 5000 IU dose is increasingly recognized as an appropriate daily amount for adults, especially those with limited sun exposure or risk factors for deficiency.

This therapeutic dose helps restore healthy levels when diet and sunlight aren't enough.

What research shows: Studies demonstrate that adequate vitamin D supports bone density and strength, which naturally decline with age.

It also plays a critical role in immune function—low vitamin D levels are associated with increased infections and weakened immunity.

Research also shows benefits for cardiovascular health, muscle function, and healthy aging overall.

How to use

Take 1 capsule daily with a meal containing healthy fats for optimal absorption, or as recommended by your healthcare professional.

Vitamin D3 is a fat-soluble vitamin that absorbs best when taken with food.

Can be taken at any time of day as it does not interfere with sleep or circadian rhythms.

Store in a cool, dry place away from direct sunlight. Vitamin D levels should be monitored by your healthcare provider to maintain optimal range.

Ingredients

Vitamin D3 (as Cholecalciferol) 5000 IU (125 mcg), Gelatin (Capsule), Cellulose

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Vitamin D3 5000 IU

Frequently Asked Questions

Why D3 instead of D2, and what's the difference?

Vitamin D3 (cholecalciferol) is the natural form your body makes from sunlight and the type found in animal-based foods.

D2 (ergocalciferol) comes from plant sources and fungi.

Research shows D3 is significantly more effective at raising and maintaining blood levels of vitamin D—it's more bioavailable, more potent, and stays active in your body longer.

D3 is also the form used to fortify foods like milk.

That's why ProHealth uses only D3 for maximum effectiveness.

Is 5000 IU safe for daily use?

Yes, for most adults. While the basic RDA is lower, growing research suggests many people need higher doses, especially those over 40, people with limited sun exposure, those living in northern climates, individuals with darker skin, and people with certain health conditions.

However, vitamin D is fat-soluble and can accumulate, so it's important to have your vitamin D levels monitored by your healthcare provider through blood testing to ensure you're in the optimal range (typically 40-60 ng/mL).

Never exceed recommended dosage without medical supervision.

When is the best time to take vitamin D3?

Vitamin D3 can be taken any time of day since it doesn't interfere with sleep or circadian rhythms.

However, because it's a fat-soluble vitamin, it absorbs best when taken with a meal containing healthy fats—like eggs, avocado, nuts, olive oil, or fatty fish.

Many people take it with breakfast or their largest meal of the day.

Consistency matters more than timing, so choose a time you'll remember daily.

How long until I see results, and should I get tested?

Vitamin D works gradually to restore optimal levels—it typically takes 2-3 months of consistent supplementation to see significant changes in blood levels.

Benefits like improved energy and immune resilience may be noticed within weeks, while bone health benefits accrue over longer periods.

It's highly recommended to get your vitamin D levels tested before starting supplementation (baseline) and again after 3 months to ensure you're reaching optimal levels.

Your healthcare provider can help determine the right dose based on your individual needs and test results.