Supplements · Midlife women
Vitamins for women over 40: what actually matters
Multivitamins over-marketed for 'women over 40' are mostly filler. A smaller list of targeted supplements — with actual RCT support — makes a measurable difference in bone, mood, energy, and cardiovascular health.
The short list that matters
- Vitamin D3 2000-4000 IU — check level, aim for 40-60 ng/mL
- Magnesium glycinate 200-400 mg — sleep, muscle, bowel
- Omega-3 EPA/DHA 1-2 g — cardiovascular, mood, inflammation
- Vitamin K2 (MK-7) 100-200 mcg — bone-friendly calcium routing
- Vitamin B12 500-1000 mcg — especially if plant-based or on metformin/PPI
- Iron — only if ferritin under 70 ng/mL
- Creatine 3-5 g/day — muscle and cognitive benefits well-established over 40
Order labs first
Vitamin D, B12, ferritin, TSH, and lipid panel identify what you actually need. Skip generic "women's" formulas and buy based on data.
Frequently asked questions
What vitamins should a woman over 40 take?
Vitamin D3 2000-4000 IU, magnesium glycinate 200-400 mg, B12 (especially if plant-based or on metformin), omega-3 EPA/DHA 1-2 g, and iron if ferritin is under 70 ng/mL.
Do I need a multivitamin?
Not necessarily. A high-quality multi is fine as a floor but rarely delivers meaningful doses of the nutrients that matter. Targeted single-ingredient supplements are usually better.
What about vitamin K2?
K2 (MK-7 100-200 mcg) with vitamin D3 supports proper calcium routing to bone rather than arteries. Useful for bone density in perimenopause and menopause.
Is calcium supplementation necessary?
Only if dietary intake is inadequate. Excess calcium supplements are associated with vascular calcification. Food first (dairy, sardines, leafy greens); supplement only what diet doesn't cover.
What about "hair, skin, and nails" formulas?
Most are underdosed biotin plus filler. Save the money and buy targeted supplements based on labs.
Considering a physician-supervised longevity protocol? Kindr Health evaluates peptide therapy as part of personalized perimenopause and menopause care.
Request your Longevity Consult →Explore Kindr Health
Related: FDA peptide review July 2026 briefing · Peptide therapy hub · Longevity service
Written and medically reviewed by the Kindr Health Clinical Team · Published 2026-06-19 · Last reviewed 2026-07-01. Compounded medications are prepared by FDA-registered 503A pharmacies and are not FDA-approved drug products.