Can You Take Apple Cider Vinegar While Pregnant? A Complete Safety Guide
Bottom line: Apple cider vinegar (ACV) is likely safe in small amounts when consumed as a pasteurized food product (e.g., in salad dressings). However, supplementation and drinking undiluted ACV are not recommended during pregnancy due to insufficient safety data, risks to tooth enamel, and potential digestive side effects .
This article breaks down what the evidence says, what the risks are, and how to make a safer decision.
Quick Answer Table: Apple Cider Vinegar & Pregnancy Safety
What Does the Research Say?
Animal Studies: Limited Reassurance
A 2021 animal study found that apple cider vinegar did not cause negative effects on fetal development in rats, even at relatively high doses . An older toxicology review also reported no effects on implantation or maternal/fetal survival at doses up to 1,600 mg/kg body weight per day .
Important limitation: These are animal studies. Results do not automatically translate to humans, and no controlled human trials have been conducted on ACV use during pregnancy .
Human Data: Essentially Absent
There are no scientific studies on the use of apple cider vinegar for medical conditions during pregnancy . Professional medical databases classify ACV as having “unknown safety in pregnancy and lactation” and explicitly advise avoidance when used as a supplement .
A 2024 Lebanese study showed promising results for ACV on BMI and fasting blood sugar in non-pregnant participants aged 12–25, but the authors explicitly stated the findings cannot be extrapolated to pregnant women .
The Main Risks of Apple Cider Vinegar During Pregnancy
1. Foodborne Illness from Unpasteurized Products
The most serious risk comes from unpasteurized apple cider vinegar. Because pregnancy weakens the immune system, consuming unpasteurized products exposes you to bacteria like Salmonella, Listeria, and E. coli . In severe cases, foodborne illness during pregnancy can lead to miscarriage or stillbirth .
Safe choice: Only consume ACV products explicitly labeled “pasteurized.”
2. Tooth Enamel Erosion
ACV is highly acidic. Sipping undiluted or even diluted ACV exposes your teeth to acid that erodes enamel. This risk is amplified during pregnancy, when morning sickness already exposes teeth to stomach acid, and hormonal changes can increase susceptibility to dental problems .
Mitigation: Always dilute ACV with water and drink it quickly rather than sipping over time. Rinse your mouth with plain water afterward.
3. Heartburn and Digestive Discomfort
Pregnancy already increases the likelihood of acid reflux and heartburn, especially in later trimesters. Adding an acidic substance like ACV can worsen these symptoms . Some women also report nausea, stomach upset, or vomiting after consuming ACV .
4. Risk of Low Potassium and Bone Effects
Excessive ACV consumption has been linked to hypokalemia (low potassium levels) and osteoporosis in at least one case report of a young woman who consumed very large amounts (250 mL/day) for years . This is an extreme example, but it illustrates that ACV is not risk-free at high doses.
5. Unproven Claims About Gestational Diabetes
While some sources suggest ACV may help with blood sugar control—potentially relevant for gestational diabetes—there is not enough research to recommend it for this purpose in pregnancy . Managing gestational diabetes requires medical supervision, not self-treatment with ACV.
If You Choose to Use Apple Cider Vinegar: Safety Guidelines
If you decide to use ACV after consulting your healthcare provider, follow these precautions:
When to Avoid Apple Cider Vinegar Entirely
Do not use ACV during pregnancy if you:
- Are taking diuretics, laxatives, or cardiac glycosides (e.g., digoxin)
- Have a history of low potassium levels
- Have severe acid reflux or a stomach ulcer
- Are considering it for gestational diabetes management without medical supervision
Safer Alternatives for Common Pregnancy Concerns
| Concern | Safer Alternative |
|---|---|
| Morning sickness / nausea | Ginger tea, vitamin B6 (with doctor approval), small frequent meals |
| Heartburn | Calcium carbonate antacids (pregnancy-safe), avoiding trigger foods, sleeping elevated |
| Blood sugar concerns | Medical nutrition therapy, prescribed medication if needed, regular monitoring |
| Digestive discomfort | Fiber-rich foods, adequate hydration, gentle walking |
What the Experts Say: Summary of Positions
| Source | Position |
|---|---|
| Drugs.com (Professional) | GRAS as food; avoid amounts greater than those found in food because safety is unproven |
| Examine.com | Advises “avoid” for supplementation; pasteurized ACV in food amounts likely safe |
| German Midwifery/Nutrition Experts (HiPP) | No recommendation for regular ACV consumption in pregnancy; concerns about dental health and reflux |
| Swedish Food Agency | A couple of tablespoons diluted in water is acceptable during pregnancy |
| FPnotebook | Unknown safety in pregnancy; avoid |
| Swisse (Manufacturer) | “Not suitable for pregnant women” (for their ACV supplement) |
The Bottom Line
You can likely consume pasteurized apple cider vinegar in small amounts as part of food, just as you would use any vinegar in cooking or dressings. However, drinking ACV daily, taking ACV supplements, or using unpasteurized ACV is not recommended during pregnancy.
The evidence base for ACV in pregnancy is virtually nonexistent. Given that pregnancy is a time to minimize unnecessary risks, the most prudent choice is to avoid ACV supplementation and high-dose consumption until more research is available.
Always consult your obstetrician or midwife before adding any supplement or making significant dietary changes during pregnancy.
