What supplements should women over 40 take?

The evidence-based foundation: magnesium glycinate (300–400mg elemental, evening), vitamin D3 with K2 (2,000 IU D3 daily with fat), and quality omega-3 in triglyceride form (1,000–2,000mg EPA+DHA daily). These address the most common deficiencies and support bone health, cardiovascular function, mood, sleep and inflammation. Add creatine monohydrate (3–5g daily) and a methylated B-complex once the foundation is established.

What supplements are not worth it for women over 40?

Generic multivitamins (contain too little of what matters in the wrong forms), collagen at low doses (requires 10g+ daily to show benefit), supplements claiming to 'balance hormones' without specific clinical evidence, and most detox or cleanse products.

Should women over 40 take creatine?

Yes. Creatine monohydrate at 3–5g daily supports muscle mass, cognitive function, mood stability, bone density, and sleep recovery. The 2025 CONCRET-MENOPA trial — the first RCT specifically in perimenopausal women — found measurable improvements with no adverse effects. It is one of the most studied supplements in existence, historically undersold to women.

The Complete Women Over 40 Supplement Stack — What the Science Actually Supports

The supplement industry is overwhelming by design. Walk into any health food shop and you'll find a thousand products, each claiming to be essential, each with a price tag that suggests you're missing something critical if you don't buy it. I have spent four years reading the actual science. This is what I've concluded: most of it isn't worth your money. A small number of things are genuinely, meaningfully worth taking. Here is the complete, honest, evidence-ranked guide.

Everything I'm about to share I have either researched extensively as a scientist or used personally — or both. The goal is not to have you buy everything. The goal is to help you spend your supplement budget on the things that will actually make a difference, and skip the things that won't.

Tier 1 — The Non-Negotiable Foundation

These are the supplements with the strongest evidence base for women over 40, the most relevant to the specific physiology of perimenopause and menopause, and the most likely to produce noticeable results. If you do nothing else, do these three.

1. Magnesium Glycinate — 300–400mg before bed

Sleep, anxiety, mood, bone health, muscle function. Oestrogen helps cells retain magnesium — as it drops, magnesium depletes. NZ soil is already low in it. This is the supplement with the broadest benefit for the widest range of perimenopause symptoms. Glycinate form only — not oxide. View on iHerb →

2. Vitamin D3 + K2 — 2,000 IU D3 with MK-7 K2

NZ women are consistently below optimal. D3 and K2 work together — K2 directs calcium into bones not arteries. Requires magnesium to activate. Bone density, mood, immune function, sleep. Get tested first — aim for 75–100 nmol/L. View on iHerb →

3. Nordic Naturals Ultimate Omega — 1,280mg EPA/DHA daily

Cardiovascular protection, mood, inflammation, dry eyes and skin, joint health, brain function. Triglyceride form only — absorbs 70% better than standard ethyl ester fish oil. Nordic Naturals publishes TOTOX oxidation values — the quality benchmark. View on iHerb →

Tier 2 — Targeted Support

Add these once your Tier 1 foundation is established consistently — after 4–6 weeks of Tier 1. Each addresses a specific aspect of the women over 40 physiology with good evidence.

4. Creatine Monohydrate — 3–5g daily

Brain energy, mood stability, cognitive function, muscle preservation, reaction time. The 2025 CONCRET-MENOPA trial proved it works specifically in perimenopausal women. Not just for athletes. Tasteless, dissolves in water, safe with HRT. Dr Stacy Sims calls it the number one supplement for women. View on iHerb →

5. B Complex with Methylfolate

Stress depletes B vitamins rapidly. B6 supports GABA and serotonin synthesis. B12 and methylfolate (not folic acid) support neurological function. Choose a complex specifying methylfolate — up to 40% of women have reduced folic acid conversion. View on iHerb →

Tier 3 — NZ Superfoods and Gut Health

These are powerful additions once your foundation is solid — particularly the NZ-specific options where you genuinely can't find equivalent products elsewhere.

6. NZ Greens Powder (Nutrient Rescue)

Whole food foundation. Eight NZ-grown superfoods. Four serves of fruit and vegetables in one daily shot. Makes every other supplement work harder. NZ social enterprise, spray-free, organic partners. Shop Nutrient Rescue →

7. NZ Blackcurrant Extract (CurraNZ)

Cognitive function, cerebral blood flow, antioxidant protection, mood, recovery. Ten years of research. NZ-grown anthocyanins — up to 1.5x more potent than non-NZ blackcurrants. Directly relevant to perimenopausal brain fog and cardiovascular health. Shop CurraNZ →

8. Quality Probiotic

A ZOE study of 70,000+ women found gut microbiome quality is directly linked to perimenopause symptom severity. As oestrogen declines, gut diversity decreases. A multi-strain probiotic with Lactobacillus and Bifidobacterium species supports the estrobolome — the gut bacteria that metabolise and recirculate oestrogen. View on HealthPost NZ →

What to Skip — Save Your Money

Collagen powders at low doses. The evidence requires meaningful doses (10g+ daily) to show skin and joint benefit. Most "beauty collagen" products are dramatically underdosed. If you're going to use collagen, use a therapeutic dose product.

Generic multivitamins. Most contain too little of what you need and the wrong forms of several key nutrients — particularly magnesium (oxide not glycinate), vitamin D (too low dose), and folate (folic acid not methylfolate). You're better served by targeted supplementation based on your specific needs.

Any supplement claiming to "balance hormones" without specific active compounds and clinical evidence. This phrase is used broadly to sell products with minimal evidence. Always ask: what is the active compound? What clinical evidence exists? What dose is being used?

Start with three. Do them consistently for six weeks. Then reassess.

Magnesium glycinate, vitamin D3+K2, quality omega-3. That's the foundation. Everything else builds on it. Consistency beats complexity every time.

Live healthy. Love lots. Be your best you. 🌿 — Sarah xx

VelaOra Picks — The Core Stack

Affiliate links — how this works

★ Top Pick: Magnesium Pure Encapsulations Magnesium Glycinate The single most impactful supplement for most women over 40. Sleep, anxiety, muscle cramps, bone density — magnesium glycinate addresses all of them. Take 300–400mg elemental before bed. Allow 3–4 weeks for full effect. View on iHerb →

Life Extension Vitamins D and K with Sea-Iodine D3 + K2 MK-7 + iodine in one capsule. Three nutrients NZ women are consistently deficient in. D3 with K2 directs calcium to bones. Iodine supports thyroid function — relevant as thyroid issues are common in perimenopause. Test your vitamin D before and after. View on iHerb →

Nordic Naturals Pro Omega 2000 (EPA+DHA) High-dose, independently tested omega-3. The dose matters — 2g+ EPA+DHA daily is where you see meaningful effects on inflammation, mood, joints, and cardiovascular risk. Most standard fish oils deliver a fraction of this. This is therapeutic-grade. View on iHerb →

Jarrow Formulas KSM-66 Ashwagandha 300mg For stress resilience and cortisol regulation. The best-evidenced adaptogen for perimenopausal women — 300mg KSM-66 twice daily has RCT evidence for cortisol reduction, sleep quality improvement, and anxiety reduction. Add this if stress and reactivity are significant for you. View on iHerb →

VelaOra uses affiliate links. If you purchase through these links, VelaOra earns a small commission at no extra cost to you. Affiliate income supports the research and writing that makes this platform possible. Sarah only recommends products she has researched and believes are genuinely worth buying.