Pregnancy sickness affects up to 80% of pregnant women, typically starting around week 6 and peaking between weeks 8 and 10. The good news: a combination of dietary changes, supplements, and simple environmental adjustments can significantly reduce symptoms for most people. By week 20, many women are symptom-free, but the weeks in between can be miserable without the right strategies.
Why Pregnancy Sickness Happens
For years, the cause of pregnancy nausea was poorly understood. A landmark study from USC and the University of Cambridge identified the key culprit: a hormone called GDF15, produced by the placenta, which increases substantially during pregnancy. Women get sick when they’re exposed to higher levels of GDF15 than their body is accustomed to. This means it’s not just about how much of the hormone is circulating. It’s about the gap between your pre-pregnancy baseline and your pregnancy levels.
Women with naturally low GDF15 levels before pregnancy experience more severe symptoms because the jump is larger. Meanwhile, women with certain blood disorders that cause chronically high GDF15 are largely protected from pregnancy sickness, since their bodies are already adapted. This explains why severity varies so dramatically from person to person and even between pregnancies.
Eating to Reduce Nausea
An empty stomach makes nausea worse. Eating small amounts frequently, every one to two hours, keeps your blood sugar stable and prevents the hollow feeling that triggers waves of sickness. Keep simple snacks like crackers, dry toast, or plain rice cakes next to your bed so you can eat something before you even sit up in the morning.
Cold foods tend to work better than hot ones because they release fewer odors. A cold sandwich, yogurt, chilled fruit, or a smoothie may be easier to tolerate than a cooked meal. If someone in your household is cooking, ask them to avoid pungent ingredients like garlic, onions, fish, and vinegar. Heated, heavily seasoned food is one of the most common triggers, and you may notice you can smell these on other people’s skin or breath long after the meal is over.
When you do eat, bland is your friend. Foods that are dry, starchy, and lightly salted tend to sit best. Avoid greasy, fried, or very rich foods, which slow digestion and can intensify nausea. Sipping fluids between meals rather than during them also helps, since a full stomach combined with liquid can increase the urge to vomit.
Ginger and Vitamin B6
These are the two best-studied natural remedies for pregnancy nausea, and both have solid evidence behind them.
Ginger has the highest quality evidence of any non-drug therapy. A 2022 meta-analysis confirmed it significantly reduces nausea compared to placebo, though it’s less effective at stopping actual vomiting. The recommended dose is 250 mg of standardized ginger extract three to four times daily, up to a maximum of 1,000 mg per day. You can get this through ginger capsules, ginger tea made from fresh root, or ginger chews, but standardized capsules make dosing more reliable.
Vitamin B6 (pyridoxine) at 25 mg taken three times daily (75 mg total) has been shown to reduce nausea more effectively than placebo. You can take ginger and B6 together. When combined, some guidelines suggest a lower dose of each: 600 mg of ginger with 37.5 mg of B6 daily. Both are widely available over the counter and considered safe during pregnancy.
Acupressure Wristbands
Pressing on the P6 (Neiguan) point on your inner wrist, about three finger-widths below the base of your palm between the two central tendons, can relieve nausea. Published reviews in obstetric journals support this approach as effective for many patients. Elastic acupressure wristbands (often sold as “sea bands”) apply continuous pressure to this point and are inexpensive, drug-free, and easy to wear all day. They won’t eliminate severe symptoms on their own, but they can take the edge off when used alongside other strategies.
Managing Your Environment
Pregnancy heightens your sense of smell dramatically, and odors are one of the most powerful nausea triggers. A few practical changes can make a real difference:
- Ventilate your kitchen. Open windows and use an exhaust fan when anyone is cooking. Better yet, have someone else cook when possible.
- Switch to unscented products. Perfume, scented candles, laundry detergent, and even certain shampoos can trigger waves of nausea.
- Carry a pleasant scent. A lemon slice, a sprig of fresh mint, or a small bottle of an essential oil you tolerate can help override unpleasant environmental smells.
- Keep rooms cool. Heat intensifies nausea and amplifies odors. A fan or cooler room temperature can help.
Fatigue also worsens pregnancy sickness. Rest when you can, even if it means adjusting your schedule or asking for help. The peak weeks between 8 and 10 are often the hardest, and giving yourself permission to do less during this window is not a luxury.
When Over-the-Counter Options Aren’t Enough
If ginger, B6, and dietary changes aren’t controlling your symptoms, the next step is a combination of vitamin B6 with doxylamine, an antihistamine found in some over-the-counter sleep aids. This combination has been extensively studied in pregnancy. Five separate meta-analyses found no increased risk of birth defects, and the U.S. FDA has classified it in the safest category for use during pregnancy. The typical approach is 25 mg of B6 three times daily combined with a 25 mg doxylamine tablet at bedtime.
Doxylamine causes drowsiness, which is why the nighttime dose works well, but it also means you should be cautious about daytime use until you know how it affects you. A prescription version combining both ingredients in a delayed-release tablet is also available. Talk to your provider if you’re struggling to manage symptoms on your own, because effective prescription options exist and there’s no reason to suffer through weeks of constant nausea without support.
Signs That Pregnancy Sickness Has Become Serious
About 1 to 3% of pregnant women develop hyperemesis gravidarum, a severe form of pregnancy sickness that can lead to dehydration, malnutrition, and weight loss. This is not just “bad morning sickness.” It’s a medical condition that sometimes requires hospital treatment.
Seek care promptly if you experience any of the following: you cannot keep down any food or fluids for 24 hours, you’ve lost more than 5% of your pre-pregnancy body weight, your urine is very dark or you’re urinating infrequently, you feel dizzy or faint when standing, or your heart is racing. Hospital evaluation is also needed if you’re unable to keep down oral anti-nausea medication, since the treatments can’t help if they don’t stay down.
Hyperemesis often requires IV fluids and sometimes IV anti-nausea medication to break the cycle. Most women improve with treatment, but some experience symptoms well beyond the 20-week mark. If your pregnancy sickness is affecting your ability to work, care for yourself, or function day to day, that alone is reason enough to seek help rather than waiting for it to pass on its own.