How to Get Rid of Nausea From Pregnancy: What Helps

Pregnancy nausea responds to a combination of dietary changes, targeted supplements, and, when those fall short, medications with well-studied safety profiles. Up to 80 percent of pregnant people experience some degree of nausea, and for most, symptoms peak between weeks six and eighteen before tapering off. No single remedy works for everyone, but research points to a clear ladder of strategies: start with food timing and composition, add ginger or vitamin B6, and escalate to prescription antiemetics if you need them. The science behind each step is more specific than the vague “eat crackers” advice most people hear.

What Actually Causes Pregnancy Nausea

Understanding the trigger helps explain why certain remedies work. For decades, the leading suspect was human chorionic gonadotropin (hCG), the hormone your body ramps up in early pregnancy. Research has confirmed that women with nausea have higher hCG levels than those without symptoms.¹ But hCG alone doesn’t explain why some pregnancies cause relentless vomiting while others barely register.

A more recent discovery has reshaped the picture. A protein called GDF15, produced mainly by the fetus and placenta, circulates in the mother’s blood. Higher levels of GDF15 are associated with more vomiting, and the severity of a woman’s reaction depends partly on how much GDF15 her body was exposed to before pregnancy. Women whose pre-pregnancy GDF15 levels were low seem to be hit harder when levels suddenly spike, because they have less tolerance to the signal.² This explains an otherwise puzzling pattern: conditions like beta-thalassemia, which chronically elevate GDF15, are associated with less pregnancy nausea, not more. The body has already adapted to the signal.

On top of hormones, the way your body routes those signals through the vestibular system (inner ear balance), the gastrointestinal tract, and the olfactory system all influence how severe your nausea gets.³ That’s why strong smells can be devastating in the first trimester and why motion sensitivity sometimes worsens alongside morning sickness.

Is Pregnancy Nausea Doing Something Useful

A persistent finding across the research is that women who experience morning sickness are less likely to miscarry than those who feel fine throughout the first trimester. A comprehensive review found this held across all nine studies that examined the question, and women who vomited had even lower miscarriage rates than those who felt nauseous without vomiting.⁴ The leading explanation is that nausea steers pregnant women away from foods that could contain harmful chemicals during the period when the embryo’s organs are forming. Symptoms peak exactly when organ development is most vulnerable to disruption, and common food aversions during pregnancy tend to target alcohol, caffeine, and strong-flavored vegetables, all of which contain compounds that could theoretically interfere with fetal development.

Cross-cultural data support this too. Populations whose diets are higher in meat, sugar, and stimulants tend to report more pregnancy nausea, while populations eating more cereals and legumes report less.⁵ None of this means you should ignore severe symptoms or refuse treatment. The protective association is a population-level pattern, not a reason to suffer through debilitating nausea. Treating the symptom does not erase whatever underlying protection the reflex provides.

What to Eat and How to Eat It

The classic advice to nibble on crackers isn’t wrong, but it’s incomplete. Keeping something in your stomach does help, because fasting worsens the abnormal stomach rhythms that drive nausea. The more interesting finding is that what you eat matters as much as when you eat it. A study measuring gastric electrical activity in nauseated first-trimester women found that protein-heavy meals reduced both nausea and abnormal stomach rhythms more effectively than meals with the same number of calories from carbohydrates or fat.⁶ Plain toast is better than nothing, but adding a protein source — an egg, a handful of nuts, a piece of cheese — makes a measurable difference.

Practical tips that follow from the research:

Eat before hunger hits: Keeping a small protein-rich snack at your bedside and eating it before you stand up in the morning prevents the fasting state that triggers stomach rhythm disruption.
Favor cool or cold foods: They produce fewer aromas than hot meals, which matters given how amplified your sense of smell is during the first trimester.
Separate liquids from solids: Drinking large amounts of fluid with a meal can increase gastric distension. Sipping between meals often works better.

One frequently overlooked trigger is the prenatal vitamin itself. Iron-containing prenatal multivitamins worsen nausea in many women, and a study found that roughly two-thirds of women who stopped taking their iron-containing prenatal during the first trimester reported improvement in nausea and well-being.⁷ If your prenatal is making you sicker, talk to your provider about switching to a low-iron or iron-free formulation during the worst weeks and compensating with a standalone folic acid supplement. Iron stores built before pregnancy can usually bridge a short gap.

Ginger

Ginger has the strongest evidence of any non-prescription supplement for pregnancy nausea. A meta-analysis pooling results from multiple trials found that ginger supplementation cut nausea and vomiting symptoms significantly, with minimal side effects and no measurable harm to the mother or baby.⁸ Trials have used ginger in capsule, powder, and biscuit form, all of which seemed to work.⁹

One randomized trial found that ginger extract significantly reduced nausea scores starting after just the first day of treatment, though the effect on actual vomiting episodes was smaller.¹⁰ In other words, ginger is better at reducing the queasy feeling than at stopping you from throwing up. The commonly studied dose is around 250 mg of ginger extract taken several times a day, roughly equivalent to one to two grams of fresh ginger. Ginger tea, ginger chews, and ginger ale (check that it contains real ginger, many brands use artificial flavoring) are all reasonable delivery methods, though capsules allow more consistent dosing.

Vitamin B6, Doxylamine, and the Standard First-Line Medication

Vitamin B6 (pyridoxine) on its own has modest evidence. Women with pregnancy nausea tend to have lower circulating levels of B6 than those without symptoms, and supplementation raises those levels. However, one study found that while higher-dose supplementation did produce a greater improvement in symptom scores compared to lower doses, the difference was unlikely to be enough to meaningfully change how sick you feel day to day.¹¹ B6 alone is often recommended as a first step because it’s safe and easy to try, but most women with moderate nausea need something more.

The combination of doxylamine (an antihistamine) and pyridoxine (vitamin B6) is the most studied prescription treatment for pregnancy nausea and was, until recently, the only medication specifically FDA-approved for this purpose. A randomized trial showed that this combination produced a significantly greater improvement in nausea and vomiting scores compared to placebo, and nearly half of participants who received it requested to continue the medication after the trial ended.¹² The fetal safety profile of this combination has been examined in numerous studies without evidence of harm.¹³ The main side effect is drowsiness, which for some women is actually welcome if nausea is disrupting sleep.

That said, the evidence is not as airtight as it’s sometimes presented. A reanalysis of the pivotal trial found that the improvement over placebo depended on how missing data was handled. Using one statistical approach, the benefit was clear; using another, the difference between the drug and placebo was not statistically significant.¹⁴ This doesn’t mean the drug doesn’t work. It means the effect size is moderate, and expectations should match: it takes the edge off rather than eliminating nausea entirely.

Prescription Options When First-Line Treatment Isn’t Enough

A systematic review of 35 randomized trials provided a useful hierarchy. For mild symptoms, ginger, vitamin B6, antihistamines, and metoclopramide all showed benefit compared to placebo. For moderate symptoms, pyridoxine-doxylamine, promethazine, and metoclopramide performed better.¹⁵ When those options aren’t enough, ondansetron enters the picture.

Ondansetron (widely known by the brand name Zofran) is a potent anti-nausea drug originally developed for chemotherapy patients. It works well for pregnancy nausea too, but its safety profile during pregnancy has been debated. A large Danish study found no significant increase in spontaneous abortion, stillbirth, preterm delivery, or the overall rate of major birth defects among women who took ondansetron.¹⁶ A systematic review noted a possibly small increase in cardiac abnormalities in exposed newborns, though the overall risk of birth defects appeared low.¹⁷ A pooled analysis of first-trimester exposure found no overall increased risk of major malformations, with the estimate for cardiac defects specifically falling just short of statistical significance.¹⁸ The consensus from professional guidelines is that ondansetron should be reserved for women whose nausea hasn’t responded to other treatments, not used as a first resort.

Metoclopramide is another option. It works by speeding up stomach emptying and has its own reassuring safety data. A meta-analysis of over 33,000 exposed infants found no significant increase in major birth defects.¹⁹ A separate large study also found no association with increased risk of miscarriage.²⁰ Metoclopramide can cause restlessness and drowsiness, and long-term use outside of pregnancy is linked to movement disorders, but the short courses typically used during pregnancy are generally well tolerated.

Acupressure, Aromatherapy, and Nerve Stimulation

These approaches sit in a middle ground: they aren’t likely to solve severe nausea on their own, but for mild to moderate symptoms, some have respectable trial data. The P6 acupressure point, located on the inside of the wrist about three finger widths from the crease, is the most studied. One randomized trial of women hospitalized with severe nausea found that P6 acupressure significantly reduced symptoms compared to a control group and lowered the need for antiemetic drugs.²¹ A meta-analysis combining different forms of acupoint stimulation, including finger pressure, wristbands, and electrical stimulation, found reduced rates of both nausea and vomiting.²²

However, not all trials agree. One older controlled trial that included a proper sham group found no benefit from P6 acupressure over placebo.²³ The discrepancy likely comes down to study design: trials without a convincing sham control tend to show bigger effects, which hints that placebo response plays a role. Commercially available “sea bands” apply pressure to P6 and are inexpensive and risk-free. If they help you, keep using them. If not, you haven’t lost much.

A small trial on electrical nerve stimulation at the P6 point found a greater improvement in nausea scores and weight gain compared to a control device.²⁴ This uses a watch-like device that delivers mild electrical pulses. It’s available by prescription in some countries, but it remains a niche option.

Aromatherapy has thinner evidence, but two trials suggest inhaling lemon essential oil or a combination of lemon and peppermint may reduce mild to moderate nausea over several days of use.²⁵²⁶ The effect builds over a few days rather than working instantly. Given the heightened sensitivity to smells in pregnancy, this is a remedy that will either appeal to you immediately or make things worse. Trust your nose.

When Nausea Becomes a Medical Emergency

About one to three percent of pregnant women develop hyperemesis gravidarum (HG), defined by persistent vomiting, weight loss, and dehydration that doesn’t respond to simple measures. This is a different beast from ordinary morning sickness. Women with HG who lose more than 15 percent of their pre-pregnancy weight face increased risk of hospitalization, parenteral nutrition, and organ complications including liver and kidney problems.²⁷

A particularly dangerous complication of prolonged severe vomiting is Wernicke encephalopathy, caused by thiamine (vitamin B1) depletion. The brain is exquisitely sensitive to thiamine deficiency, and symptoms can include confusion, vision problems, and difficulty walking. A systematic review concluded that intravenous thiamine should be given to any HG patient with persistent or severe late-onset vomiting to prevent this condition.²⁸ In one case report, a woman’s vision returned to normal within 48 hours of receiving intravenous thiamine, underscoring both how quickly the condition develops and how well it responds to prompt treatment.²⁹

Signs that your nausea has crossed into territory that needs urgent medical attention include inability to keep any food or liquid down for 24 hours, dark or infrequent urine, dizziness when standing, rapid heart rate, and weight loss of several pounds in a week. Assessment requires more than just checking for ketones in the urine; clinical guidelines note that ketonuria is not a reliable marker for either diagnosing or gauging the severity of HG.³⁰ If your provider dismisses your symptoms because your urine dipstick looks fine, push for a broader evaluation.

The Mental Health Toll That Rarely Gets Discussed

Severe pregnancy nausea does not just end when the vomiting stops. Research has found that the severity of nausea and vomiting during pregnancy correlates with anxiety and depression levels, even in early pregnancy.³¹ For women with HG, the psychological aftermath can persist for years. A prospective study found that about 40 percent of women had clinically significant anxiety scores after an HG pregnancy, about 27 percent had significant depression scores, and roughly one in five met the threshold for post-traumatic stress symptoms. Every additional point on a standardized nausea severity scale measured during pregnancy increased the likelihood of later anxiety and PTSD symptoms.³²

These post-traumatic stress symptoms aren’t fleeting. Women with HG still showed elevated PTSD scores compared to women with no nausea two years after delivery.³³ The downstream effects touch major life domains: difficulty breastfeeding, relationship strain, financial hardship from missed work, and trouble with basic self-care have all been documented in women recovering from HG pregnancies.³⁴

This matters for two reasons. First, if you’re in the thick of severe pregnancy nausea and feeling hopeless, angry, or traumatized, those responses are well documented and not a sign of weakness. Second, if you’ve come out the other side of an HG pregnancy and find yourself struggling emotionally months later, it’s worth seeking support specifically for what you went through. Many women and their partners don’t realize that a condition framed as “just morning sickness” can leave lasting psychological marks. The more seriously the medical system treats the physical symptoms early on, the better the psychological outcomes tend to be.