Pregnancy vitamins and supplements

Walk into any pharmacy and the pregnancy supplement aisle can be overwhelming. The good news is that most of what your baby needs comes from eating well, and only a couple of supplements are genuinely recommended for everyone. Here’s what actually matters in Australia, so you can cut through the marketing.

The two that are routinely recommended:

• Folic acid (folate). Taking folic acid helps prevent neural tube defects (like spina bifida) in your baby. It’s recommended to take it for at least a month before conception and through the first three months of pregnancy — so ideally you start before you’re pregnant, but begin as soon as you know if you didn’t. If you have a higher risk (for example, diabetes, certain medications, or a previous affected pregnancy), your doctor may recommend a higher dose.
• Iodine. Iodine is important for your baby’s brain development and is hard to get enough of from food alone, so a daily iodine supplement is recommended throughout pregnancy (and breastfeeding).

A good-quality pregnancy multivitamin usually contains both folic acid and iodine in appropriate amounts, which is why many people just take one of those — it’s a convenient way to cover the essentials. Check the label to confirm it has enough of each, and that it’s designed for pregnancy.

Others you might need, depending on you:

• Iron. Many people need extra iron at some point, as pregnancy increases your needs and iron-deficiency anaemia is common. Your routine blood tests check your iron levels, and your care team will advise a supplement if you need one — it’s not automatically recommended for everyone.
• Vitamin D. If your levels are low (common if you have darker skin, cover up, or don’t get much sun), you may be advised to take a supplement. This is usually guided by a blood test.
• Calcium, and omega-3 (DHA), may be worth considering if your diet is low in dairy or fish — a good moment to ask your GP, midwife or a dietitian.

A word of caution: more is not better. Some vitamins are harmful in high doses in pregnancy — most importantly vitamin A (retinol), too much of which can affect your baby’s development. So avoid high-dose vitamin A supplements, don’t double up by taking several supplements at once without advice, and stick to products designed for pregnancy. If you take other supplements or herbal products, run them past your pharmacist or doctor, as not all are safe.

The overall approach is “food first, supplements to fill the gaps.” A varied diet — plenty of vegetables and fruit, wholegrains, protein, dairy or alternatives, and iron-rich foods — does most of the work, and the recommended folic acid and iodine cover the two things that are genuinely hard to get right from food alone. If you’re vegetarian, vegan, have a restricted diet or a medical condition, it’s well worth a chat with your GP or a dietitian to tailor things to you.

A few practical tips make supplements easier. If your pregnancy multivitamin makes you queasy (common in the first trimester), try taking it with food, at a different time of day, or before bed — and if you really can’t tolerate it, taking at least a standalone folic acid and iodine is the priority in those early weeks. Be a little wary of gummy vitamins, which often leave out iron and sometimes iodine and can be high in sugar — check they actually contain what you need. And there’s no need to buy the most expensive brand; read the label, not the marketing.

It’s also worth remembering that “natural” doesn’t automatically mean “safe” in pregnancy. Some herbal supplements, teas and traditional remedies aren’t recommended, and high doses of certain vitamins (vitamin A especially) can be harmful. So before starting anything beyond a standard pregnancy multivitamin — including herbal products, high-dose single vitamins, or a supplement a well-meaning friend swears by — run it past your pharmacist, GP or midwife. When it comes to your baby, a quick check is always worth it.

So keep it simple: take your folic acid and iodine (a pregnancy multivitamin is an easy way), add iron or vitamin D if you’re advised to, avoid megadoses, and let good food do the rest.