Multivitamin for women: which actives are priorities by age?
Women's micronutrient needs vary with age, cycle and motherhood. The 5 actives a women's multivitamin should never compromise on.
A 'unisex' multivitamin ignores two physiological realities: menstrual cycles that drain iron every month, and the specific needs before/during/after motherhood. Active by active analysis.
For women, five actives are priorities: iron (menstrual losses), folate B9 (400 µg, fertility), vitamin B12 (monitor after 40), the calcium/vitamin D pair (bone capital) and magnesium (premenstrual syndrome). Iron is supplemented separately, never included in the multi. During pregnancy, switch to a dedicated prenatal formula.
| Active | 20, 35 | 35, 50 | 50+ |
|---|---|---|---|
| Iron | Priority (cycles) | Priority (cycles) | Less critical (menopause) |
| Folate B9 | 400 µg (fertility) | 400 µg if planning pregnancy | Standard intake |
| Vitamin B12 | Standard | Monitor | Priority (absorption ↓) |
| Calcium / Vitamin D | Bone capital | Bone capital | Priority (post-menopause) |
| Magnesium | PMS | PMS, sleep | Sarcopenia, tension |
1. Iron: the major blind spot
Women of childbearing age lose on average 30 to 50 mg of iron per menstrual cycle. Surveys estimate that around 23% of women aged 25 to 50 have low ferritin. The consequences: chronic fatigue, hair loss, weakened immunity, dizziness. Solution: an annual ferritin check and, if needed, separate supplementation, not an iron-included multivitamin (iron oxidises in contact with vitamins C/E).
2. Folate (B9): essential for fertility
Every woman of childbearing age should aim for 400 µg of folate per day, whether or not she's planning a pregnancy, the first weeks of embryogenesis often precede awareness of the pregnancy itself. A proper women's multivitamin covers this intake.
3. Vitamin B12: monitor after 40
Gastric absorption of B12 declines with age (parietal atrophy). A multivitamin with 2.5 µg methylcobalamin covers requirements. For vegetarian/vegan profiles: add sublingual B12 supplementation 1000 µg/week.
4. Calcium and vitamin D: bone capital
Female bone density peaks around 30 then slowly declines, accelerating after menopause. A multivitamin with vitamin D3 at 100, 200% NRV and a daily calcium intake of 1000 mg (multivitamin + diet) are the minimum.
5. Magnesium: tension and cycle
Magnesium and premenstrual syndrome: the literature converges on a moderate but real effect of magnesium bisglycinate 300, 400 mg/day on mood, cramps and premenstrual sleep. A multivitamin rarely provides the full dose, often to be topped up with a separate magnesium.
Pregnancy: not a general-purpose multivitamin
During pregnancy, switch to a dedicated 'prenatal' formula (folate 400 µg minimum, iodine 150 µg, DHA 200 mg). The Chutex Complete Multivitamin is not designed for this period, consult your midwife or gynaecologist.
Go deeper
Public references and official sources
À lire aussi
Frequently asked questions
Which actives are priorities in a women's multivitamin?
Five actives matter: iron (menstrual losses), folate B9 (400 µg, fertility), vitamin B12 (after 40), the calcium/vitamin D pair (bone capital) and magnesium (premenstrual syndrome). Iron is supplemented separately, never included in the multi.
Does a women's multivitamin contain iron?
Rarely, and deliberately so: iron oxidises in contact with vitamins C and E and carries a risk of overdose. It should be supplemented separately, after a ferritin test, only in case of confirmed deficiency.
Can you take a standard women's multivitamin while pregnant?
No. Pregnancy requires a dedicated prenatal formula (folate 400 µg minimum, iodine 150 µg - DHA 200 mg). A general-purpose multivitamin is not suited to this period: consult your midwife or gynaecologist.