Essential Supplements for Women
A life-stage guide to supplementation — because women's nutritional needs change significantly from adolescence through menopause and beyond.
Important: This guide provides general educational information. Individual needs vary significantly based on diet, health conditions, medications, and genetics. Always consult your healthcare provider before starting any supplement, especially during pregnancy or breastfeeding.
Teens (13–19)
Building the foundation for lifelong health
Adolescence is a critical period for building bone density, establishing hormonal balance, and supporting rapid growth. Many teen girls don't get enough key nutrients from diet alone, particularly if they are picky eaters, vegetarian, or have heavy periods.
Iron
Once menstruation begins, iron needs increase significantly. Teenage girls need 15 mg daily (vs. 8 mg before menstruation). Iron deficiency is the most common nutritional deficiency in adolescent girls, affecting energy, concentration, and athletic performance.
View Iron →Calcium & Vitamin D3
Teens build about 40% of their total bone mass during adolescence. Calcium (1,300 mg/day from food and supplements combined) and Vitamin D3 (600–1,000 IU) work together for optimal bone development. This is the most important window for preventing osteoporosis later in life.
View Vitamin D3 →Omega-3
The teenage brain is still developing and benefits significantly from EPA and DHA. Studies suggest omega-3 supplementation may support mood stability, focus, and academic performance during this critical developmental period.
Menstrual Cycle Support
Addressing period-related nutritional needs
Menstruation creates specific nutritional demands that many women don't adequately address. Monthly blood loss means ongoing iron depletion, while hormonal fluctuations affect magnesium levels, mood, and inflammation.
Iron
Women with heavy periods may need iron supplementation to prevent anemia. Symptoms of iron deficiency include fatigue, pale skin, shortness of breath, and difficulty concentrating. Get your ferritin levels tested — optimal levels for women are 50-100 ng/mL, though many labs list "normal" as low as 12.
Magnesium
Research shows magnesium levels drop during the luteal phase (second half of the cycle), which may contribute to PMS symptoms. Supplementing with 200-400 mg of magnesium glycinate may help reduce cramps, bloating, mood swings, and sleep disruption. Studies suggest starting supplementation in the second half of the cycle provides the most benefit.
View Magnesium →Omega-3 (EPA/DHA)
Multiple studies have found that omega-3 fatty acids can reduce the severity of menstrual pain (dysmenorrhea). A 2018 meta-analysis showed that fish oil supplementation significantly reduced pain scores compared to placebo. The anti-inflammatory properties of EPA are particularly relevant.
Vitamin B6
Vitamin B6 plays a role in neurotransmitter synthesis, including serotonin and dopamine. Some studies suggest 50-100 mg of B6 may help alleviate PMS-related mood symptoms, though evidence is moderate. Do not exceed 100 mg/day long-term due to risk of peripheral neuropathy.
Fertility & Trying to Conceive
Preparing your body for pregnancy
Ideally, preconception supplementation should begin 3-6 months before trying to conceive. This gives your body time to build up nutrient stores that are critical for early fetal development — often before you even know you are pregnant.
Folate (not folic acid)
Folate is the single most important preconception supplement. It is critical for preventing neural tube defects, which develop in the first 28 days of pregnancy — often before a missed period. The recommended dose is 400-800 mcg daily. Methylfolate (5-MTHF) is preferred over folic acid, especially for the estimated 30-40% of women with MTHFR gene variations who have difficulty converting synthetic folic acid.
CoQ10
Coenzyme Q10 is important for egg quality, particularly for women over 35. Egg maturation is one of the most energy-demanding processes in the body, and CoQ10 supports mitochondrial function. Studies suggest 200-600 mg of ubiquinol (the active form) daily may improve egg quality and ovarian response.
Vitamin D3
Multiple studies link adequate Vitamin D levels to improved fertility outcomes, including higher rates of implantation and clinical pregnancy in IVF. Aim for blood levels of 40-60 ng/mL. Most women need 2,000-4,000 IU daily to reach optimal levels.
View Vitamin D3 →Pregnancy
Supporting you and your developing baby
Critical: Always work with your OB-GYN or midwife on supplementation during pregnancy. The information below is educational — your healthcare provider should guide your specific protocol.
Prenatal Multivitamin
A high-quality prenatal should contain methylfolate (not folic acid), iron, iodine, choline, Vitamin D3, and DHA. Look for third-party tested brands. Many prenatals are insufficient in Vitamin D, choline, and omega-3, so additional supplementation of these may be needed.
Choline
Choline is critical for fetal brain development, yet 90-95% of pregnant women don't meet the adequate intake of 450 mg/day. Most prenatal vitamins contain little to no choline. Consider a separate supplement of 300-500 mg daily. Eggs are also an excellent dietary source.
DHA (Omega-3)
DHA is essential for fetal brain and eye development, particularly in the third trimester when the fetal brain undergoes rapid growth. Aim for at least 300 mg DHA daily. Choose a supplement tested for heavy metals and PCBs — purity matters more during pregnancy.
View Omega-3 →Iron
Iron needs increase to 27 mg/day during pregnancy to support the 50% increase in blood volume and fetal development. Iron bisglycinate is gentler on the stomach than ferrous sulfate. Take with Vitamin C to enhance absorption, and away from calcium and coffee which inhibit it.
Postpartum & Breastfeeding
Replenishing and supporting recovery
The postpartum period places enormous nutritional demands on the body. Nutrient stores are depleted from pregnancy and birth, while breastfeeding requires even more calories and nutrients. Many postpartum mood issues are linked to nutritional deficiencies.
Continue your prenatal
Continue taking your prenatal vitamin throughout breastfeeding. It takes months to replenish nutrient stores depleted during pregnancy. The nutrient demands of breastfeeding are similar to or greater than pregnancy for many nutrients.
Vitamin D3
Breast milk is often low in Vitamin D, even in mothers who are supplementing at standard doses. Higher-dose maternal supplementation (4,000-6,400 IU/day) has been shown to adequately raise breast milk D levels, potentially eliminating the need for infant drops. Discuss with your pediatrician.
View Vitamin D3 →Omega-3 (DHA)
DHA continues to be important for infant brain development through breast milk. Maternal DHA stores are often depleted after pregnancy, and low DHA levels have been associated with postpartum depression in some studies. Aim for at least 300 mg DHA daily.
Magnesium
Postpartum magnesium needs remain high (310-320 mg/day, 320 mg if breastfeeding). Magnesium supports sleep quality, stress management, and muscle recovery — all crucial during the postpartum period. Magnesium glycinate taken before bed may also support better sleep.
View Magnesium →Perimenopause & Menopause
Supporting the transition and beyond
The decline in estrogen during perimenopause and menopause affects bone density, cardiovascular health, mood, and metabolism. Strategic supplementation can help address these changing needs, though it should complement — not replace — lifestyle measures like weight-bearing exercise and a nutrient-dense diet.
Calcium + Vitamin D3 + Vitamin K2
Bone loss accelerates dramatically in the 5-7 years after menopause. This trio works synergistically: Vitamin D3 helps absorb calcium, while Vitamin K2 (MK-7 form) directs calcium to bones rather than arteries. Aim for 1,000-1,200 mg calcium (from food + supplements), 2,000 IU D3, and 100-200 mcg K2 (MK-7) daily.
Magnesium
Magnesium becomes even more important during menopause. It supports bone density (about 60% of body magnesium is in bones), helps manage sleep disruption and hot flashes in some women, and supports cardiovascular health. Consider 300-400 mg of magnesium glycinate daily.
Omega-3 (EPA/DHA)
Cardiovascular risk increases significantly after menopause as estrogen's protective effect diminishes. Omega-3 fatty acids support heart health through anti-inflammatory and triglyceride-lowering effects. Some studies also suggest EPA may help with menopausal depression and hot flash frequency.
View Omega-3 →Collagen
Estrogen decline accelerates collagen loss — women lose approximately 30% of their skin collagen in the first 5 years after menopause. Hydrolyzed collagen peptides (5-15 g daily) may support skin elasticity, joint health, and potentially bone density, though evidence is still emerging.
Supplements for All Life Stages
Regardless of your life stage, these three supplements are broadly beneficial for most women:
Vitamin D3
Important at every stage — for bones, immunity, mood, and hormonal health. Most women benefit from 1,000-2,000 IU daily, with higher doses during pregnancy and menopause. Get tested to optimize your dose.
View Vitamin D3 →Magnesium
Supports over 300 body processes. Particularly valuable for women because of its roles in menstrual comfort, sleep, stress management, bone health, and pregnancy support. 200-400 mg glycinate form daily.
View Magnesium →Omega-3 (EPA/DHA)
Anti-inflammatory, cardioprotective, neuroprotective — omega-3s support health across every life stage. From brain development in teens, to pregnancy support, to cardiovascular protection in menopause. 1,000-2,000 mg combined EPA/DHA daily.
View Omega-3 →