Fertility Supplements: What to Take When You're Trying to Conceive
Walk down the supplement aisle when you are trying to conceive and it feels like every bottle promises a baby. A friend swears by one thing, a forum swears by another, and Instagram is selling you a third. If you are trying to conceive in Wilmington, Leland, or anywhere along the Brunswick County coast, I want you to have one clear place to start.
Here is the short version: supplements support a healthy body, they do not replace one. The right ones, taken for the right reasons, can fill gaps in your nutrition, your cycle, and your egg and sperm health. The wrong ones, or too many of them, waste your money and sometimes cause problems. Below are the fertility supplements I talk about most with women and couples, who need to be careful with each, and how to build a short list instead of a cabinet full of bottles.
Do Fertility Supplements Actually Work?
Some do. Some don't. None of them work alone.
Here is the honest picture. Folic acid before pregnancy has strong, well-established evidence behind it. Vitamin D, omega-3s, CoQ10, and inositol have promising research, mostly from smaller studies with mixed results. Herbs like vitex have the thinnest evidence of all. And no bottle makes up for a body that is under-fed, under-slept, or dealing with a thyroid or hormone problem nobody has found yet.
A supplement is a support, not a shortcut.
Food, sleep, and movement do the heavy lifting, so start there. Read more: Fertility 101 for Women Trying to Conceive: 7 Ways to Prepare Your Body →
How Long Should You Try Before Getting Help?
If it has been a while, you are far from alone, and you do not have to wait for a crisis to ask questions. The general guideline is to ask for an evaluation after 12 months of trying if you are under 35, and after 6 months if you are 35 or older. Come in sooner if your cycles are irregular or very painful, or if you have PMOS, endometriosis, thyroid disease, or a past pregnancy loss. Fertility also takes two people, and sperm health plays a role in a large share of cases, which is why the supplement conversation includes your partner too.
Should You Test Before You Start Taking Fertility Supplements?
Yes, whenever you can. Guessing gets expensive and can backfire. Before anyone buys a bottle, I like to look at vitamin D, iron and ferritin, B12, and thyroid function (TSH, free T4, free T3, TPO antibodies). Depending on your history, hormone labs can add useful context.
Your cycle is data too. Cycle length, ovulation signs, cervical fluid, and the length of your luteal phase tell me which supplements might help and which ones you can skip. Learning to read those signs is the heart of the Fertility Awareness Method, which I teach one-on-one. Read more: Cycle Tracking for Fertility →
Which Supplements Should You Take When Trying to Conceive?
Here is how I sort them. Start with the foundation. Add from the second and third groups only when your cycle, your symptoms, or your labs point that direction. Nobody needs all fourteen.
01. The Foundation: Where Most People Start
Prenatal vitamin. Yes, you should take a prenatal before you are pregnant. Your baby's neural tube forms in the first weeks, often before a test turns positive, so your stores need to be built ahead of time. Look for a whole-food-based formula with at least 400 mcg of folic acid or folate, plus iodine, B12, and choline. If you have hemochromatosis or a history of high iron, check the iron content with your provider first.
Vitamin D3. Vitamin D works more like a hormone than a vitamin, and low levels are common. Low vitamin D shows up often in PMOS and endometriosis and has been linked to poorer IVF outcomes in studies. Test first, then dose to your level. Too much is toxic, and anyone with high calcium levels or a granulomatous disease should be monitored.
Omega-3 fatty acids (DHA and EPA). Omega-3s calm inflammation and support hormone balance, and once you are pregnant, DHA becomes essential for your baby's brain and eye development. Fish oil and algae-based options both work. If you take blood thinners or have a bleeding disorder, talk with your provider before taking high doses.
Probiotics. Can you take probiotics while trying to conceive? Yes, and I recommend it. A healthy gut and a healthy vaginal microbiome go hand in hand, and both matter for the environment sperm and embryos need. Pair a quality probiotic with daily fermented foods. Some people get mild gas or loose stools for the first week or two.
Magnesium. Magnesium is involved in hundreds of reactions in your body, and it helps with the things that make trying to conceive harder: poor sleep, cramps, constipation, and stress-related migraines. Magnesium glycinate tends to be gentler on digestion. High doses cause diarrhea, and anyone with kidney problems should check with a provider first.
02. Cycle and Hormone Support: When Your Symptoms Point There
Vitamin B6. B6 helps your ovaries make progesterone. It comes up for a short luteal phase, spotting before your period, PMS, hormonal acne, and hormonal migraines. Stay at the recommended dose, because long-term high doses (over 100 mg a day) can cause nerve damage.
Calcium D-glucarate. This one helps your liver clear used-up estrogen. It comes up for heavy periods, swollen or tender breasts, and severe PMS, all of which can point to too much estrogen relative to progesterone. Check with your provider first if you take medications that your liver processes.
Vitamin B5 (pantothenic acid). B5 supports your adrenals, the glands that run your stress response. It is sometimes used when chronic stress, poor sleep, and a wired-but-tired feeling are part of the picture. The research here is limited, so treat it as an option to discuss, not a must. High doses can upset your stomach.
Inositol (myo-inositol and D-chiro-inositol). Inositol is one of the better-studied options for PMOS, where it can improve insulin sensitivity, support ovulation, and support egg quality. It is generally well tolerated. If you have diabetes, your glucose medication may need adjusting under supervision.
Vitex (chasteberry). Vitex is the herb I hear about most. Some people find it helps regulate their cycle and support the luteal phase, likely through its effect on the pituitary gland and prolactin. It is not for everyone. Skip it with hormone-sensitive conditions, review it first if you take dopamine-related medications, and stop it once you are pregnant unless your provider tells you otherwise.
03. Egg and Sperm Support
CoQ10. CoQ10 is an antioxidant that helps mitochondria, the tiny power plants inside egg and sperm cells, make energy. It is most often discussed for people over 35 or with diminished ovarian reserve, and it shows up in sperm support too. Check with your provider if you take blood thinners or blood pressure medication.
Zinc. Zinc supports ovulation, hormone production, and healthy sperm. It also competes with copper for absorption, so long-term high doses need monitoring.
Selenium. Selenium supports your thyroid and may support sperm motility and early embryo development. The safe range is narrow, so check what is already in your multivitamin before adding more. Too much is toxic.
N-acetyl cysteine (NAC). NAC is an antioxidant with insulin-sensitizing effects, so it comes up for PMOS and for sperm quality. It interacts with nitroglycerin and a few other medications, and you should review it with your provider once you are pregnant.
Should Your Partner Take Fertility Supplements Too?
If your partner produces sperm, yes! Zinc, selenium, CoQ10, and omega-3s are the ones I discuss most, alongside a good multivitamin. Sperm take roughly 70 to 90 days to develop, so a partner who starts today is working on the sperm that will be ready about three months from now. Read more: Fertility 101 for Men Trying to Conceive →
What About Maca, Ashwagandha, and Other Trendy Fertility Supplements?
The research on both is thin. Maca has a few small studies, mostly on libido and sperm measures, and very little on pregnancy outcomes. Ashwagandha is a fantastic adaptogen and has recently been ‘green-lighted’ for use in pregnancy, although it has been used by midwives for generations. If either one is already in your routine, tell me, and we will talk about when to stop it once you get a positive test.
Be wary of any "fertility blend" that hides its doses inside a proprietary formula. You cannot tell whether you are getting a helpful amount or a pinch of everything.
How Do You Take Fertility Supplements Safely?
Start small. Begin with the foundation, and add one new thing at a time so you can tell what is helping and what is bothering you.
More is not better. Vitamin D, zinc, selenium, and B6 all have upper limits, and going over them can do harm.
Choose tested brands. The FDA does not review supplements for safety or effectiveness before they are sold. Look for third-party testing, such as USP or NSF certification.
Bring your bottles. Show your provider everything you take, including herbs, powders, and teas.
Recheck in three months. Your cycle, your symptoms, and your labs tell you whether the plan is working.
When Should You Start Taking Fertility Supplements?
Start at least three months before you plan to conceive. Eggs and sperm both finish maturing over roughly that window, so what you take today shapes the cells that will meet three months from now. The foundation supplements can start now. Anything from the second and third groups should wait for a conversation about your cycle and labs.
Fertility Supplement Questions, Answered
Should I take prenatal vitamins before I'm pregnant?
Yes. Your baby's neural tube forms in the first weeks of pregnancy, often before a test turns positive, so I recommend starting a prenatal with at least 400 mcg of folic acid or folate at least three months before you plan to conceive.
What is the best supplement to take when trying to conceive?
There is no single best one. Most people I work with start with a good prenatal vitamin, add vitamin D if their level is low, and consider omega-3s and a probiotic. Anything beyond that should be based on your cycle, symptoms, and labs.
How long before trying to conceive should I start fertility supplements?
At least three months. Eggs and sperm both take about that long to mature, so what you take now supports the cells that will meet three months from now.
Should my partner take fertility supplements too?
Yes, if your partner produces sperm. Zinc, selenium, CoQ10, and omega-3s are the ones I discuss most, and sperm take about 70 to 90 days to develop, so it helps to start early.
Is vitex safe to take when trying to conceive?
Some people use vitex to help regulate their cycle and support the luteal phase, but it is not for everyone. Skip it with hormone-sensitive conditions, review it first if you take dopamine-related medications, and stop it once you are pregnant unless your provider tells you otherwise.
Does CoQ10 help with fertility?
CoQ10 is an antioxidant that supports the mitochondria in egg and sperm cells. It is most often discussed for people over 35 or with diminished ovarian reserve. Check with your provider first if you take blood thinners or blood pressure medication.
How Can Wild Moon Midwifery Support Your Fertility Journey in Leland and Wilmington, NC?
I am Casey Hartell, the owner and midwife at Wild Moon Midwifery in Leland, NC, and I am a Doctor of Nursing Practice, Certified Nurse Midwife, and Women's Health Nurse Practitioner. I treat the whole person, not just the lab result, and every plan starts with a slow, honest conversation about your cycle, your history, and what you are hoping for. Women and couples come to me from across Brunswick County and the greater Wilmington area, including Leland, Hampstead, Southport, and the beach towns.
If you are trying to conceive, here is where I can meet you:
01. Well-Woman Visits. A full visit to review your health history, your cycle, your labs, and the supplements you already take, so your plan starts from real information instead of guesses.
02. Hormone Balancing. Care for irregular cycles, painful periods, PMS, and the other signs your hormones are asking for attention.
03. Fertility Awareness Method, Taught One-on-One. You learn to read your daily temperature and cervical fluid so you know when you ovulate. Lab work comes second, once we know what your cycle is telling us.
04. Conceive: My 6-Month Fertility Support Program. If you are ready to have a baby and want steady, personal support instead of another round of guessing, Conceive is built for you. Over six months, I walk with you through your cycle, your labs, your nutrition and supplements, and the daily habits that shape your hormones. And when you do get pregnant, I can be the midwife who catches your baby at home.
Read more: Conceive, My 6-Month Fertility Program →
The Bottom Line
All in all, fertility supplements work best as a short, personal list, not a big stack. Start with a good prenatal, test your vitamin D, and add the rest only when your cycle, your symptoms, or your labs call for it. Give your body about three months, bring your partner into the plan, and get help sooner rather than later if something feels off. You do not have to sort through this on your own.
Ready to build a fertility plan around your body? Learn more about Conceive, my 6-month fertility support program at Wild Moon Midwifery in Leland, NC →
This article is for education and is not medical advice. Talk with your healthcare provider before starting any supplement, especially if you take medications, have a medical condition, or may already be pregnant.
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