D3 Serum - High Potency Vitamin D3 for Cardiovascular & Immune Support - PRLabs

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Key Health Benefits

  1. Promotes bone growth and mineralization: Vitamin D3 helps support healthy bone development and mineralization, contributing to strong and healthy bones.

  2. Supports absorption of calcium: Vitamin D3 plays a crucial role in enhancing the absorption of calcium from the diet, which is essential for maintaining optimal bone health.

  3. Cardiovascular health support: D3 Serum aids in supporting cardiovascular health, although the specific mechanisms are not mentioned in the provided content.

  4. Supports immune system health: Vitamin D3 has an impact on immune cells and their activation, playing a role in supporting immune system health.


Supplement Facts

Serving Size 5 Drops (0.11 mL)
Servings Per Container about 114

Other Ingredients: Extra Virgin Olive Oil, D-Alpha Tocopherol (preservative)


Recommended Usage

Take 5 drops daily or as directed.

Premier Research Labs

  • Manufactured in a GMP-compliant facility registered with the USFDA
  • All ingredients genetically tested to guarantee potency and purity
  • Screened for all heavy metal and common contaminants
  • Made exclusively with non-GMO ingredients

Premium Ingredients

Only a small percentage of the ingredients we source meet our cutting-edge quality standards.

Manufactured in the USA

We manufacture in the USA with premium ingredients sourced worldwide.

No Synthetic Fillers

We do not add synthetic fillers in our formulas.

<H2> More Information (From The Manufacturer)

Introducing Premier Research Labs' D3 Serum. D3 Serum offers 5,000 IU per serving of natural-source Vitamin D3 as a fat-soluble liquid in a base of extra virgin olive oil. No artificial flavors or colorings, no added magnesium stearate or other undesirable chemical agents.

✔ 5,000 IU vitamin D3 per dose
✔ Natural source vitamin D3 (not synthetic)
✔ In a fat-soluble base (extra virgin olive oil) for better absorption
✔ No added magnesium stearate
✔ No artificial colors or flavors
✔ Promotes bone growth and mineralization*
✔ Promotes absorption of calcium*
✔ Supports cardiovascular health*
✔ Supports immune system health*


Do you think about vitamin D when you’re catching up on the sun’s rays outside? New, exciting research shows that this little powerhouse vitamin has many newly discovered functions. Of course, maintaining healthy vitamin D levels is essential throughout all stages of your life. But did you know that vitamin D receptors are found in countless tissues throughout the entire body? That can only mean that vitamin D has a much greater impact on the body’s health than we previously thought.


We already knew that vitamin D was very important in helping to maintain healthy bones, bone growth, bone mineralization and absorption of calcium. Vitamin D also supports cardiovascular system health.* But now, eye-opening research shows that our immune cells have vitamin D receptors. What? Immune cells with vitamin D receptors? Yes! This means that getting enough vitamin D may be critically important to support our immune system health by helping to activate immune cells.*


The body’s need for adequate vitamin D has gathered even more attention lately. Although direct sunlight exposure on the skin initiates an excellent source of vitamin D, many people simply can’t achieve the vitamin D levels they need for their best health. Maybe they simply don’t receive enough sunlight or it’s tough for them to convert vitamin D to the active form. Either way, taking a high quality vitamin D supplement makes good sense for supporting optimal health.*


First, the preferred form of vitamin D is D3 (not vitamin D2) because it is better metabolized by the body. Second, look for a natural source of vitamin D3 (not synthetic) with at least 5,000 IU per dose. Avoid products with undesirable chemical tagalongs such as magnesium stearate (a questionable excipient) or other chemical no-no’s.


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