Cheapest Third-Party Tested Prenatal Vitamins

The cheapest third-party tested prenatal we found is Nature Made Prenatal Multi + DHA, at $0.21 a day. It is USP Verified and has the folic acid, iodine and iron US guidance asks a prenatal to carry. 6 of the 9 prenatals we checked are on a public testing list.

By Erin Rose Updated October 23, 2026 How we score

Our recommendation

Buy Nature Made Prenatal Multi + DHA

One softgel a day gives 800 mcg folic acid, 150 mcg iodine, 27 mg iron and 200 mg DHA. USP checks that each bottle holds what the label says.

Buy on Amazon · $18.99

Want choline in the same pack? TheraNatal Complete has 250 mg choline and 300 mg DHA, and is on NSF/ANSI 173. It costs $1.01 a day for 3 pills.
Can’t swallow pills? OLLY The Essential Prenatal Gummies are on NSF/ANSI 173, at $0.43 a day. They have no iron.

Which prenatal vitamins are third-party tested? (6)

An outside program checked each of these and lists it by name. Tap a badge to see the listing.

Our pick

Nature Made Prenatal Multi + DHA

USP Verified

Folate 1,330 mcg DFE (folic acid) · iodine 150 mcg · iron 27 mg · DHA 200 mg · no choline.

$0.21 a day
Buy on Amazon · $18.99
Most choline and DHA

TheraNatal Complete

NSF/ANSI 173

Folate 1,334 mcg DFE (methylfolate) · iodine 220 mcg · iron 27 mg · DHA 300 mg · choline 250 mg. 3 pills a day: 2 tablets and 1 fish oil softgel.

$1.01 a day
Buy on Amazon · $91.76
Lowest cost tested gummy

OLLY The Essential Prenatal Gummies

NSF/ANSI 173

Folate 667 mcg DFE (folic acid) · iodine 150 mcg · no iron · DHA 50 mg · choline 10 mg. Ask your doctor whether you need a separate iron pill.

$0.43 a day
Buy on Amazon · $16.88
OLLY Ultra Strength Prenatal Softgels

NSF/ANSI 173

Folate 667 mcg DFE (folic acid) · iodine 150 mcg · iron 7.4 mg · DHA 200 mg · no choline. Its iron is under the 27 mg NIH amount for pregnancy.

$0.67 a day
Buy on Amazon · $19.99
SmartyPants Prenatal Gummies

NSF/ANSI 173

Folate 667 mcg DFE (methylfolate) · iodine 290 mcg · no iron · DHA 60 mg · choline 55 mg. 3 gummies a day.

$1.17 a day
Buy on Amazon · $27.95
Thorne Basic Prenatal

NSF Certified for Sport NSF/ANSI 173

Folate 1,700 mcg DFE (methylfolate) · iodine 150 mcg · iron 45 mg · no DHA · choline 110 mg. Its label iron is the most here, at the adult upper limit. In Consumer Reports’ 2026 test it measured 54.5 mg, over that limit, and had trace lead. Do not add an iron pill unless your doctor says to.

$1.23 a day
Buy on Amazon · $37.00

A day = the label’s daily amount. Costs are each brand’s list price (or a named store’s regular price) divided by the days in the bottle, checked October 21, 2026. Amazon’s price can differ. We count a listing only when it names the same product.

Not on any testing list (3)

We also checked these 3. We did not find them on NSF Certified for Sport, NSF/ANSI 173, USP Verified, Informed Sport and Informed Choice. That does not mean they are bad, only that no public list checks them.

Deva Vegan Prenatal

Not on a public list

Folate 1,000 mcg DFE (folic acid) · iodine 225 mcg · iron 21 mg · no DHA · choline 50 mg. Vegan. Its iron is under the 27 mg NIH amount for pregnancy.

$0.16 a day
Check price
One A Day Prenatal Advanced

Not on a public list

Folate 1,330 mcg DFE (folic acid) · iodine 150 mcg · iron 27 mg · DHA 200 mg · choline 110 mg. The choline comes in a second tablet.

$0.50 a day
Check price
Pink Stork Total Prenatal + DHA

Not on a public list

Folate 600 mcg DFE (methylfolate) · iodine 290 mcg · iron 27 mg · DHA 200 mg · choline 50 mg. The brand says “third-party tested every batch” but names no lab or list. Its label gives 600 mcg DFE of methylfolate, less than the 667 mcg DFE in 400 mcg of folic acid.

$1.20 a day
Check price

Deva Vegan Prenatal costs the least of all, at $0.16 a day, but it is not on a list. Our pick costs $0.21 and is.

What should a prenatal vitamin have?

Three amounts matter most, and our pick has all three. DHA and choline are extras.

A day’s amount, and who says so.
Nutrient	How much a day	Why
Folic acid	400 to 800 mcg. Labels list it as DFE (dietary folate equivalents): 400 mcg folic acid = 667 mcg DFE.	Prevents neural tube defects. Start a month before pregnancy (USPSTF).
Iodine	150 mcg	The American Thyroid Association says every prenatal should have 150 mcg. 25 of 59 best-selling prenatals had none.
Iron	27 mg	The NIH amount for pregnancy. In trials, iron lowered the chance of anemia.
DHA	200 mg	An omega-3. In trials, at different doses, omega-3s lowered the chance of an early preterm birth.
Choline	450 mg	The NIH intake for pregnancy. Most prenatals hold far less.

Which prenatal vitamins are NSF certified?

TheraNatal Complete, OLLY The Essential Prenatal Gummies, OLLY Ultra Strength Prenatal Softgels, SmartyPants Prenatal Gummies and Thorne Basic Prenatal are on NSF/ANSI 173. Thorne Basic Prenatal is also on NSF Certified for Sport, which screens each lot for banned drugs.

Do prenatal vitamins hold what the label says?

Not always. In 2026, Consumer Reports sent 17 prenatals to a lab and measured 9 nutrients. 15 had at least one nutrient outside the range USP allows. That includes Nature Made’s prenatal gummy, which is USP Verified. Our pick is a different product, the Nature Made softgel, and Consumer Reports did not test it.

A testing list is still the best check a shopper has. USP and NSF test before they list a product, and they set limits for heavy metals.

Is methylfolate better than folic acid?

It has not been shown to be. Folic acid is the only form of folate shown to prevent neural tube defects, and people with an MTHFR gene variant can use it too (CDC). Our pick uses folic acid. Thorne and TheraNatal use methylfolate.

What about heavy metals?

Consumer Reports found only trace amounts, in 3 of the 17 prenatals it tested. One was Thorne Basic Prenatal, which is on our tested list. USP Verified and both NSF lists set limits for heavy metals and test against them before they list a product.

What does each program check?

What each program means for a prenatal, in our words.
Program	What it tells you
NSF Certified for Sport	Everything NSF/ANSI 173 checks, plus a screen of each lot for drugs banned in sport.
NSF/ANSI 173	Checks that what the label says is in the bottle, and that lead, mercury, arsenic and cadmium stay under set limits. It does not screen for banned substances.
USP Verified	Checks that the bottle holds the ingredients on the label in the stated amounts, and that heavy metals and pesticides stay under set limits.

How to check your own bottle

Look for the USP Verified mark or the NSF mark on the bottle.
Search NSF’s list or USP’s list for the exact product name.
Check the label for 400 to 800 mcg folic acid, 150 mcg iodine and 27 mg iron.
Treat “third-party tested” on a label with no list behind it as a claim you can’t check.

This page compares products. It is not medical advice. Ask your doctor before starting any supplement in pregnancy, and about a higher folic acid dose if you have had a pregnancy with a neural tube defect.

Questions

When should I start a prenatal vitamin?

At least 1 month before you try to get pregnant, and keep taking it through the first 2 to 3 months of pregnancy. That is when folic acid prevents neural tube defects (USPSTF 2023).

Is a gummy prenatal as good as a pill?

Gummy prenatals have no added iron (Minnesota WIC), so you may need a separate iron pill. In a 2026 Consumer Reports test, 4 of 8 gummies had less folic acid than their labels said.

Do I need choline too?

Pregnancy calls for 450 mg of choline a day (NIH). Most prenatals hold little or none, and our pick has none. Of the tested ones here, TheraNatal Complete has the most, 250 mg. Ask your doctor whether to add choline.

Sources

US Preventive Services Task Force. Folic Acid Supplementation to Prevent Neural Tube Defects: Preventive Medication. Final recommendation, 2023. uspreventiveservicestaskforce.org
De-Regil LM, et al. Effects and safety of periconceptional oral folate supplementation for preventing birth defects. Cochrane Database Syst Rev. 2015. PMID 26662928
Minnesota Department of Health WIC. Gummy Prenatal Vitamins. February 2025. health.mn.gov
CDC. MTHFR gene variants and folic acid. cdc.gov
Iodine supplementation for pregnancy and lactation, United States and Canada: recommendations of the American Thyroid Association. Thyroid. 2006. PMID 17042677
Patel A, et al. Iodine Content of the Best-Selling United States Adult and Prenatal Multivitamin Preparations. Thyroid. 2019. PMID 30266075
NIH Office of Dietary Supplements. Iron and Choline fact sheets for health professionals. Iron, Choline
Middleton P, et al. Omega-3 fatty acid addition during pregnancy. Cochrane Database Syst Rev. 2018. PMID 30480773
Consumer Reports. Prenatal vitamin test: label accuracy and heavy metals. August 2026. consumerreports.org
USP Verified, NSF/ANSI 173 and NSF Certified for Sport: each program’s own list, searched by product name, October 21, 2026.