Vitamin D3
Cholecalciferol — typical dose 2,000 IU
We don’t sell Vitamin D3. Whether you actually need it — and at what dose — depends on your bloodwork. Get your analysis to find out.
What it does
Vitamin D3 is the form your body produces naturally from sunlight. It plays a critical role in calcium absorption, bone mineralisation, immune regulation, and mood stability. Most adults over 50 are deficient, especially in winter months or indoor lifestyles. D3 (cholecalciferol) is significantly more effective than D2 (ergocalciferol) at raising and maintaining blood levels.
Key benefits
- Bone density and calcium absorption
- Immune system support
- Mood regulation
- Muscle function
The evidence
Backed by the VITAL trial (25,871 participants) and multiple large RCTs. Strong evidence for bone health and immune function. Most Australians are deficient in winter.
Where to buy
If your analysis calls for Vitamin D3, this is the quality, single-ingredient version we’d reach for:
NOW Foods — Vitamin D3, 2,000 IU Softgels (2,000 IU / softgel)Exact dose and form (cholecalciferol, 2,000 IU softgel), single-ingredient, from a top-value reference brand.
We may earn a small referral fee if you buy through this link — it never changes our pick. We hold no inventory and have no house brand.
Important
Consult your doctor if taking calcium channel blockers or thiazide diuretics. Pair with Vitamin K2 for optimal calcium metabolism.