Vitamin C NZ: Benefits, Dose, Forms & Liposomal vs Standard

[ 01 ] Key Facts

Dose in element³	RISE (AM Formula): 45mg
Form	Ascorbic acid — well-absorbed, bioavailable form
Signs you may need more	Frequent illness, slow wound healing, easy bruising, fatigue, dry or rough skin
Safe range	45mg daily RDI (NZ); upper intake level 2,000mg/day. Higher doses are commonly used during illness. Water-soluble; excess is excreted.

Food sources

Kiwifruit
Capsicum (bell peppers)
Oranges
Broccoli

[ 02 ] Rationale

Why this ingredient is in element³

Vitamin C’s most critical role is one that rarely makes the marketing material: it is essential for the synthesis of cortisol by the adrenal glands. The adrenals contain the highest concentration of vitamin C in the body, and they draw heavily on this reserve during stress. Cortisol synthesis requires vitamin C as a cofactor for the hydroxylase enzymes in the steroidogenic pathway. When vitamin C is depleted — which happens rapidly under chronic stress — the adrenals’ ability to produce an appropriate cortisol response is compromised, contributing to the HPA axis dysregulation that drives many perimenopausal symptoms.

Collagen synthesis is vitamin C’s most visible role. Vitamin C is required by prolyl hydroxylase and lysyl hydroxylase, the enzymes that stabilise collagen’s triple-helix structure. Without adequate vitamin C, collagen production is impaired at every site in the body: skin loses firmness and elasticity, joints lose cushioning, blood vessel walls become fragile (leading to easy bruising), and wound healing slows. This is not a cosmetic concern alone — collagen constitutes approximately 30% of the body’s total protein.

Vitamin C’s role as an antioxidant extends beyond direct free radical scavenging. It regenerates Vitamin E after it has neutralised a lipid peroxide, effectively recycling the body’s fat-soluble antioxidant defences. It also supports the endogenous glutathione system — complementing Riboflavin’s (B2) role in glutathione recycling. This interconnected antioxidant network is one of the reasons why isolated nutrient supplementation often underperforms: these systems are designed to work together.

Within the RISE formula, vitamin C has a specific synergy with iron. Ascorbic acid converts ferric iron (Fe³⁺) to ferrous iron (Fe²⁺) in the gut, significantly enhancing non-haem iron absorption. This is why both nutrients are included in the morning formula — and why separating them from the calcium and zinc in REST is important for absorption optimisation.

At 45mg, RISE provides the full NZ RDI. This dose supports daily antioxidant, collagen, and adrenal function as part of a comprehensive formula, and can be readily supplemented through dietary vitamin C intake throughout the day.

[ 03 ] At 35+

Relevant at 35+

After 35, vitamin C’s multiple roles converge to become simultaneously more important and more vulnerable. Collagen production naturally declines by approximately 1–1.5% per year from the mid-20s, and this decline accelerates during perimenopause as oestrogen (which stimulates collagen synthesis) fluctuates and falls. Ensuring vitamin C availability for the collagen production that remains is a basic but essential strategy for maintaining skin, joint, and vascular health during this transition.

The adrenal demand for vitamin C intensifies as HPA axis dysregulation becomes more common. Women in their late 30s and 40s often experience a pattern of chronic low-grade stress that depletes adrenal vitamin C reserves faster than they are replenished. Cortisol output becomes erratic — sometimes too high, sometimes insufficient — and the downstream effects include fatigue, mood instability, disrupted sleep, and impaired immune function. Vitamin C cannot fix HPA axis dysregulation on its own, but without it, the adrenals literally cannot produce the cortisol they need to regulate the stress response.

Immune function also shifts after 35. The innate and adaptive immune systems both decline gradually with age (immunosenescence), and this process is influenced by oxidative status and nutrient availability. Vitamin C supports immune cell function at multiple levels: neutrophil migration, lymphocyte proliferation, and the production of interferons. Research indicates that maintaining adequate vitamin C status supports immune resilience as the body ages.

[ 04 ] Your Questions

Your Questions

What is vitamin C?

Vitamin C, also known as ascorbic acid, is a water-soluble essential nutrient that humans cannot synthesise and must obtain entirely from diet or supplementation. It functions as a potent antioxidant, a cofactor for enzymes involved in collagen synthesis and neurotransmitter production, and a regulator of immune function. Uniquely among vitamins, vitamin C is also a direct participant in adrenal gland function — the adrenal glands contain some of the highest concentrations of vitamin C in the body, using it to synthesise cortisol during the stress response.

What are the benefits of taking vitamin C?

Vitamin C supports immune defence through multiple mechanisms: it enhances the production and function of white blood cells, acts as a direct antioxidant protecting immune cells from oxidative damage, and maintains the integrity of mucosal barriers. It is essential for collagen synthesis — the structural protein of skin, tendons, blood vessels, and bone — making it a key nutrient for skin health and wound healing. Vitamin C also enhances non-haem iron absorption, supports adrenal health, and contributes to neurotransmitter synthesis including noradrenaline.

What are the benefits of vitamin C in the element³ protocol?

In element³ RISE, vitamin C at 45mg provides the RDI for daily immune and antioxidant support while serving a specific functional role: enhancing iron absorption. RISE includes iron (9mg amino acid chelate) and vitamin C together in the same morning formula because ascorbic acid converts ferric iron to the more bioavailable ferrous form, meaningfully improving iron uptake. Vitamin C also supports RISE’s adrenal and cortisol-related benefits by contributing to the synthesis of cortisol in the adrenal cortex — one of the adrenal gland’s most vitamin C-dependent processes.

What is the recommended daily intake of vitamin C?

The recommended dietary intake in New Zealand is 45mg per day for adult women, which is lower than the US RDA of 75mg. element³ RISE provides 45mg per serve, meeting the NZ RDI. The upper intake level is 2,000mg per day; vitamin C is water-soluble and any excess is excreted, with the main side effect of very high doses being digestive discomfort (diarrhoea at doses above 2,000mg). Higher doses (500–1,000mg) are commonly self-administered during illness, and this is safe and widely supported by evidence.

What food provides vitamin C?

Vitamin C is most abundant in kiwifruit (one kiwi provides approximately 80–100mg), capsicum (bell peppers), citrus fruits, strawberries, broccoli, Brussels sprouts, and tomatoes. New Zealand kiwifruit are among the world’s richest food sources per gram. Vitamin C is heat-sensitive and water-soluble — cooking significantly reduces food vitamin C content, and prolonged storage also causes losses. Women who regularly eat fresh fruit and vegetables can meet the 45mg NZ RDI through diet; those with less varied diets may fall short.

Are there any Vitamin C side effects?

Vitamin C is safe and well-tolerated at all doses up to the 2,000mg upper intake level. At the 45mg RDI dose in element³ RISE, no side effects are expected. At very high single doses (above 1,000–2,000mg), some individuals experience digestive discomfort including loose stools — this is the most common side effect and resolves when the dose is reduced. High-dose vitamin C is not recommended for individuals with haemochromatosis (iron overload conditions), as it enhances iron absorption. Kidney stones from vitamin C are theoretically possible at very high doses but are not a risk at standard supplemental amounts.

What are vitamin C deficiency symptoms?

Vitamin C deficiency symptoms range from subtle to severe. Early signs include easy bruising, slow wound healing, dry or rough skin, persistent fatigue, and increased susceptibility to infections. Moderate deficiency causes swollen or bleeding gums, joint pain, and impaired collagen integrity. Severe deficiency causes scurvy — characterised by extreme fatigue, haemorrhage, tooth loss, and eventually death — though this is rare in developed countries. Subclinical insufficiency is more common and presents as immune vulnerability, skin that heals slowly, and persistent low-grade fatigue.

What form of vitamin C is in the element³ blend?

element³ RISE uses ascorbic acid — the standard, well-absorbed form of vitamin C and the reference compound in all clinical research. It is directly bioavailable without requiring conversion. While alternative forms such as sodium ascorbate (buffered, gentler on the stomach at high doses), ascorbyl palmitate (fat-soluble), and liposomal vitamin C (enhanced bioavailability) exist, ascorbic acid is the appropriate form at the 45mg RDI dose used in RISE, where tolerability is not a concern and the primary goals are daily antioxidant support, iron absorption enhancement, and adrenal function.

How much vitamin C do adults need per day?

The NZ RDI for adult women is 45mg. Many countries set their RDI higher (75–90mg in the US). element³ RISE provides the full 45mg NZ RDI, designed to complement dietary vitamin C from fruits and vegetables. There is no harm in consuming more through diet.

[ 05 ] The Research

1 study

The Research

Study	Key finding	Why it's here	Read
Vitamin C and Immune FunctionCarr, A. C., & Maggini, S. (2017). Vitamin C and immune function. Nutrients, 9(11), 1211. https://doi.org/10.3390/nu9111211	Comprehensive review concluding that adequate vitamin C intake supports innate and adaptive immune cell function and is required for collagen synthesis and antioxidant defence.	Supports adrenal function, collagen synthesis and antioxidant defence.	Read →

[ 06 ] In the Protocol

Where Vitamin C (as Ascorbic Acid) sits in the element³ Protocol

In RISE (AM Formula), Vitamin C at 45mg supports three critical systems: adrenal cortisol synthesis for HPA axis function, collagen production for skin and structural integrity, and immune cell activity for daily defence. It enhances iron absorption (taken together in the morning formula), recycles Vitamin E (extending fat-soluble antioxidant protection), and supports the glutathione system that Riboflavin (B2) helps maintain. Taken in the morning, vitamin C provides adrenal support at the time of day when cortisol demand peaks. Its separation from the calcium and zinc in REST ensures optimal iron absorption.

You can learn more about the full element³ ingredient philosophy at element3.co.nz.

Vitamin C (as Ascorbic Acid)