Supplement

Vitamin D3

Name: Vitamin D3
Brand: Superpower
SKU: vitamin-d3-1
Rating: 4.8 (155 reviews)

member-only product

This supplement delivers 1,000 IU (25 µg) of vitamin D3 per capsule — the naturally preferred and most bioactive form of vitamin D. Vitamin D3 helps the body absorb and properly use calcium and phosphorus, essential for maintaining strong bones, healthy teeth and normal muscle function. It is formulated free from common allergens and unnecessary additives, aligning with high-quality, clean-label standards.

HSA / FSA Eligible

Curated by superpower

The Superpower Research team promises top levels of ingredient quality and scientific efficacy. We'll price match anything you find lower.

Is this supplement right for you? Your biomarkers will tell you.

Metabolic Health

Insulin

A hormone that regulates blood sugar; elevated levels may indicate insulin resistance or diabetes risk.

Energy

Ferritin

A protein that stores iron; low levels indicate iron deficiency while high levels may indicate iron overload or inflammation.

Thyroid

Thyroxine (T4), Total

The main thyroid hormone; abnormal levels indicate overactive or underactive thyroid.

Energy

Cortisol

The stress hormone; abnormal levels may indicate adrenal disorders or chronic stress.

Heart and Vascular Health

Lipoprotein (a)

A type of lipoprotein associated with an increased risk of cardiovascular diseases.

$Lipoprotein fractionation$

Heart and Vascular Health

Lipoprotein fractionation

Breaks down cholesterol into particle types to assess heart health risk.

The Superpower Research Team curates the top 1% of health items from around the world for top levels of ingredient quality, safety, and scientific efficacy.

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Vitamin D3