# Is Your Prenatal Vitamin Missing Vitamin A?
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_By Dr. Naomi Whittaker, MD, Board-Certified OBGYN, MIGS, NFPMC, FCI and Pam Schoenfeld, MS, RD, LDN ยท Published: 2026-11-08_
Most women assume a prenatal vitamin covers the basics. For vitamin A, that assumption often fails.
In a count of 214 US prenatal vitamins, about a quarter listed no vitamin A at all \[1\]. Many prenatals use beta-carotene, the plant form the body has to convert. And we found no federal rule on what a prenatal must contain.
As far as we can find, vitamin A isn't required in prenatals. We'd like every couple planning a pregnancy to know that before they assume theirs has it.
## Do all prenatal vitamins contain vitamin A?
No. [A label study by federal nutrition scientists](https://rrmacademy.org/library/is-nutrient-content-and-other-label-information-for-prescription-prenatal-supple-ef9imaon/) reviewed 214 prenatal products on the US market in 2015 \[1\]. Only 48% of the 82 prescription prenatals listed any vitamin A \[1\]. Over-the-counter products did better, at 91% of 132 \[1\].
By our math from those percentages, about 55 of the 214, roughly a quarter, listed none. Most of the gap sat in prescription products.
A later review looked at the form. Among 188 prenatal supplements, [only 35% contained preformed vitamin A](https://rrmacademy.org/library/evidence-based-recommendations-for-an-optimal-prenatal-supplement-for-women-in-t-9tdvqdyn/), the ready-made form \[2\]. Beta-carotene appeared in 73% \[2\]. So about two in three products in that sample carried no preformed vitamin A. The paper didn't report how many had neither form. Its lead author helped develop a commercial prenatal, and the authors hold a pending patent on prenatal supplements \[2\].
A third study searched a federal label database in 2022\. It found 421 prenatal products \[3\]. [Only 33 contained all six key nutrients the study tracked](https://rrmacademy.org/library/selecting-a-dietary-supplement-with-appropriate-dosing-for-6-key-nutrients-in-pr-y5l8ulqy/), vitamin A among them \[3\]. None provided the study's target amounts of all six \[3\].
## Is there a federal rule for what a prenatal vitamin must contain?
We found none. A prenatal vitamin is a dietary supplement. No federal rule we could find sets which nutrients it has to include.
FDA does set a Daily Value for vitamin A in pregnancy \[4\]. That number is a reference for the percentage printed on the label. It doesn't require any amount in the bottle.
The label itself isn't a lab result. A federal audit lab-tested 12 prenatal products in 2023 \[5\]. Vitamin A was the nutrient most often off its label, outside acceptable limits in 9 of the 12 \[5\].
## What's the difference between retinol and beta-carotene in a prenatal?
Preformed vitamin A is the ready-made form. Your body can use it as it is. On a label it may appear as retinol or as a retinyl compound, such as vitamin A palmitate.
Beta-carotene is a plant pigment. Your body has to convert it into vitamin A first. That conversion is weaker than many people assume. Federal reference values credit supplemental beta-carotene at half the value of retinol \[6\]. Beta-carotene in food gets one-twelfth \[6\]. Those ratios don't account for how much conversion varies from person to person. Registered dietitian Pam Schoenfeld, co-author of this post, points out that genes aren't the only factor: zinc, iron, thyroid function and gut health matter too, though there isn't enough research yet to put numbers on them. Part 3 of this series explains why, and why the conversion varies from person to person.
## Why do so many prenatal vitamins use beta-carotene?
We found no record of why. Two facts point toward safety. In a 1995 study of 22,748 pregnancies, [high intakes of preformed vitamin A](https://rrmacademy.org/library/teratogenicity-of-high-vitamin-a-intake-pqky6swf/) were linked to birth defects \[7\]. The risk came from preformed vitamin A, not beta-carotene \[7\].
The federal upper limit makes the same split. It applies to preformed vitamin A only, not to beta-carotene \[6\]. So beta-carotene counts toward the daily requirement without counting toward the limit.
We also found no published record of when manufacturers changed formulas. The surveys above capture one moment in time.
Safety at the high end and enough at the low end are both real concerns. Part 4 of this series covers both.
## How many pregnant women take a supplement with vitamin A?
In national survey data from 1999 to 2014, 40.3% of pregnant women used a supplement containing vitamin A \[8\]. Among women who weren't pregnant or breastfeeding, 22.0% did \[8\].
Supplements close part of the gap. In a national sample of pregnant women, [27.7% fell below the average requirement from food alone](https://rrmacademy.org/library/estimation-of-total-usual-dietary-intakes-of-pregnant-women-in-the-united-states-ug5lhnms/) \[9\]. With supplements counted, 15.5% still did \[9\].
## What should I look for on a prenatal vitamin label?
A label can answer four questions. None of them needs a number.
- **Is vitamin A listed at all?** Prescription prenatals left it off most often in the label study \[1\].
- **Which form is it?** Look for retinol or a retinyl compound, such as vitamin A palmitate, for preformed vitamin A. Look for beta-carotene for the plant form. Some products carry both.
- **Does the label name the form?** Some don't. When a label didn't state the form, one research team had to assume it was all retinol \[3\].
- **Is the label the whole story?** Not always. In the federal audit, vitamin A was the nutrient most often off its label \[5\].
Bring the bottle to your clinician, and bring your partner. Pregnancy planning belongs to both of you. Ask what form of vitamin A it contains, and whether that fits your diet. A woman on a plant-based diet relies almost entirely on beta-carotene. And only some animal foods carry much preformed vitamin A: liver above all, then egg yolks and dairy that's full-fat or has vitamin A added. Lean meat and most fish carry little \[10\]. Part 3 covers why that matters.
This is part 2 of a four-part series on vitamin A:
- [_Where Did the Vitamin A Go? What Changed in Cereal, Milk and the American Plate_](https://rrmacademy.org/commentary/where-did-the-vitamin-a-go/)
- _Plant vs. Animal Vitamin A: Why Beta-Carotene Isn't Retinol_
- _Vitamin A in Pregnancy: The Risks of Too Little and Too Much_
## Where can I watch the Save the Uterus Club talk on vitamin A?
[Pam Schoenfeld, MS, RD, LDN](https://rrmacademy.org/commentary/pam-schoenfeld-vitamin-a-fertility-nutrition/), a registered dietitian and co-author of this post, gave the Save the Uterus Club members talk "Vitamin A: Critical for Female Fertility." Pam shares her approach and her references.
[Watch the replay](https://rrmacademy.org/commentary/pam-schoenfeld-vitamin-a-fertility-nutrition/). Or [join the Save the Uterus Club](https://rrmacademy.org/save-the-uterus-club/), RRM Academy's community, for the full session library.
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_[Dr. Naomi Whittaker](https://naomiwhittakermd.com/) is a board-certified OBGYN. [Pam Schoenfeld](https://rrmacademy.org/commentary/pam-schoenfeld-vitamin-a-fertility-nutrition/) is a registered dietitian who has written about vitamin A for a decade. This article is educational and is not medical advice or a substitute for care from your own clinician._
## Sources
1. Saldanha LG, Dwyer JT, Andrews KW, et al. Is nutrient content and other label information for prescription prenatal supplements different from nonprescription products? J Acad Nutr Diet. 2017;117(9):1429-1436\. (RRM Library: )
2. Adams JB, Kirby JK, Sorensen JC, et al. Evidence based recommendations for an optimal prenatal supplement for women in the US: vitamins and related nutrients. Matern Health Neonatol Perinatol. 2022;8(1):4\. (RRM Library: )
3. Sauder KA, Couzens GL, Bailey RL, et al. Selecting a dietary supplement with appropriate dosing for 6 key nutrients in pregnancy. Am J Clin Nutr. 2023;117(4):823-829\. (RRM Library: )
4. 21 CFR 101.9(c)(8)(iv), Daily Values for vitamins and minerals, including pregnancy and lactation.
5. US Government Accountability Office. Prenatal supplements: amounts of some key nutrients differed from product labels. GAO-24-106689\. 12 December 2023\.
6. Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academies Press; 2001\. Chapter 4, Vitamin A. doi:10.17226/10026\.
7. Rothman KJ, Moore LL, Singer MR, et al. Teratogenicity of high vitamin A intake. N Engl J Med. 1995;333(21):1369-1373\. (RRM Library: )
8. Jun S, Gahche JJ, Potischman N, et al. Dietary supplement use and its micronutrient contribution during pregnancy and lactation in the United States. Obstet Gynecol. 2020;135(3):623-633\. (RRM Library: )
9. Bailey RL, Pac SG, Fulgoni VL 3rd, et al. Estimation of total usual dietary intakes of pregnant women in the United States. JAMA Netw Open. 2019;2(6):e195967\. (RRM Library: )
10. National Institutes of Health, Office of Dietary Supplements. Vitamin A and carotenoids: fact sheet for health professionals. Table 2, vitamin A content of selected foods (from USDA FoodData Central).
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Source: https://rrmacademy.org/commentary/prenatal-vitamin-missing-vitamin-a/