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Browse our range of premium supplements including our best-selling Lester's Oil and Res-V.

If you need assistance, call us on 0800 999 309.

Lester's Oil
3 month supply of Lester's Oil Advanced
Lester's Oil Advanced From $99.95
Multi-ingredients fish oil Lester's Oil with six essential nutrients
Lester's Oil From $59.95
Healthy Ageing Pack with Lester's Oil and Res-V Ultimate featuring omega-3 support and premium resveratrol antioxidant support
The Healthy Ageing Pack $269.70 From $89.90
3-month supply of the Golden Trio Value Pack with Lester's Oil Advanced, Element 12 and Res-V Ultimate
Golden Trio Bundle $199.85 From $189.85
Healthy Ageing & Deep Sleep Package for deep sleep support
Healthy Ageing & Deep Sleep Package $419.55 From $139.85
Ultimate Health y Ageing Pack 3-month supply with Lester's Oil Advanced and LifeMax NR
The Ultimate Healthy Ageing Pack $629.70 From $209.90
Lester's Oil and Res-V Ultimate Value Pack 3-month supply
Lester's Oil and Probiotic Plus 3-month supply bottles on a white background
Lester’s Oil fish oil and Element 12 magnesium, 3-month supply supplement bottles side by side
Lester's Oil & Element 12 Combo $269.70 From $89.90
3-month supply Immune Support Value Pack
Immune Support Value Pack $419.55 From $139.85
3-month supply of the Ultimate Wellness Value Pack including Lester's Oil Advanced, Element 12 Magnesium, LifeMax NR, Multiva Advanced
Ultimate Wellness Pack $959.25 From $319.75
3-month supply Total Wellness and Sleep Value Pack
Total Wellness & Sleep Pack $569.70 From $189.80
3-month supply of the Total Wellness Pack for total wellness support
Total Wellness Pack $419.55 From $139.85
3-month supply of Lester's Oil Advance & Element 12 Magnesium
3-month supply of The Ultimate Healthy Ageing & Deep Sleep Package
Lester's Oil, Res-V Ultimate and Probiotic Plus bottles on a white background

Why Lester’s Oil and Element 12 Magnesium are the Ultimate Biological Partners

As the seasons shift and daylight savings officially arrives, our bodies face a unique set of physiological challenges. In New Zealand, the "Vitamin D Winter" means that for several months of the year, the sun sits too low in the sky for our skin to produce enough Vitamin D3 naturally.

At About Health, we are often asked: "If I'm taking a high-quality Vitamin D3 supplement like Lester’s Oil, why do I also need Magnesium?"

The answer lies in a fascinating biological synergy. Supplementing with Vitamin D3 alone is only half the story. To truly support your immune health, bone density, and sleep during the colder months, you need a partner to unlock its potential.


1. The Magnesium "Key": Activating Your Vitamin D

Many people are unaware that Vitamin D is biologically inactive when it first enters the body, whether it comes from a sunbeam or a capsule. To become the powerful hormone that supports your immune system, it must undergo two conversions—first in the liver and then in the kidneys.

The Bottleneck: Every single enzyme involved in Vitamin D metabolism requires Magnesium as a co-factor.

Without sufficient Magnesium levels, Vitamin D remains stored and inactive. Research suggests that people with high Magnesium intake are less likely to have Vitamin D deficiency than those with low Magnesium levels. Essentially, Magnesium is the "key" that turns the engine on.

2. The Absorption Advantage: Why Oil Matters

Vitamin D is fat-soluble. If you take a dry Vitamin D tablet on an empty stomach, your body may struggle to absorb it effectively, leading to poor bioavailability.

The Lester’s Oil Edge: Lester’s Oil is not just a Vitamin D supplement; it is a high-strength, multi-ingredient Omega-3 formula. By combining the maximum allowable Vitamin D3 in a New Zealand-made supplement with premium concentrated fish oil, we’ve built the delivery system right into the capsule. The healthy fats in the Omega-3s act as a natural carrier, ensuring the Vitamin D3 is absorbed directly into your bloodstream.

3. The Immune-Sleep Connection

Winter wellness is built on two pillars: Defense and Recovery.

  • Lester’s Oil provides the defense. Its high-dose Vitamin D3 and Omega-3 fatty acids help manage systemic inflammation and support the "gatekeepers" of your immune system.

  • Element 12 Magnesium provides the recovery. It supports the production of GABA, the neurotransmitter responsible for "quieting" the nervous system.

The deepest stages of sleep are when your immune system does its most critical work, repairing cells and producing essential antibodies. By supporting deep, restorative sleep with Element 12, you are giving your immune system the time and environment it needs to stay strong.

4. Why This Duo is Vital for New Zealanders

New Zealand soils are notoriously low in Magnesium, making it difficult to get sufficient levels from diet alone. When you combine this with our geographical "Vitamin D gap" during the shorter days of the year, the Lester’s Oil and Element 12 Combo becomes a foundational protocol for active aging and seasonal resilience.


Summary: The Synergistic Benefits

  • Bioavailability: Lester’s Oil provides the fat-base needed for D3 absorption.

  • Activation: Element 12 provides the Magnesium required to turn D3 into a functional hormone.

  • Total Recovery: Magnesium supports the sleep quality necessary for the immune benefits of Vitamin D to take full effect.

Are you ready to optimize your winter wellness? Ensuring your Vitamin D and Magnesium levels are balanced is one of the most effective steps you can take for your long-term health.

Explore the Lester’s Oil & Element 12 Combo at About Health and discover the power of biological partnership.


Reference: "Role of Magnesium in Vitamin D Activation and Function," The Journal of the American Osteopathic Association.

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