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Look up Nature Made prenatal supplement test results for trace heavy metals.

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The lot number is printed directly on the packaging, but its location can vary by format.

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Where to find the product lot number?

Enter the full lot number as printed on packaging. It is usually 5-8 characters and found near the “Best By” date.

Test Results

Each lot is tested in our ISO/IEC 17025-accredited lab before shipping.

Testing Complete Lot-Specific Report

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Heavy Metal Test Results

The Nature Made Standard reflects our strict upper limits when testing for heavy metals. We follow California Proposition 65 safe harbor levels where those standards exist because they are among the most rigorous in the United States.

These results are listed in micrograms (mcg) per serving. One microgram equals one millionth of a gram. “Standard” is the highest acceptable limit. ☑ means the result is within that limit. “Too low to quantify” means any amount present is extremely low and below the accredited lab’s reporting threshold.

Prenatal multivitamins containing certain minerals critical to support an expectant person's health and proper development of their fetus may contain trace levels of heavy metals that occur in the environment naturally or from human activities. The levels of heavy metals in prenatal multivitamin ingredients may vary depending on whether and at what levels the prenatal multivitamin contains these ingredients, as well as the location from which the ingredients are sourced. For more information, speak with your physician about choosing a prenatal multivitamin that meets your specific nutrient needs.‡◆

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Prenatal multivitamins containing certain minerals critical to support an expectant person's health and proper development of their fetus may contain trace levels of heavy metals that occur in the environment naturally or from human activities. The levels of heavy metals in prenatal multivitamin ingredients may vary depending on whether and at what levels the prenatal multivitamin contains these ingredients, as well as the location from which the ingredients are sourced. For more information, speak with your physician about choosing a prenatal multivitamin that meets your specific nutrient needs.‡◆

Because Trust Matters

Our Safety Promise

We go above and beyond to make sure every supplement meets our highest quality standards.

  • Our prenatal supplements are USP Verified for quality and purity.
  • Every batch is tested to meet federal regulatory standards.
  • Our prenatal formulas provide key nutrients at recommended amounts for expecting moms.

Where to find the product lot number?

For brown-bottle products (e.g. Prenatal Multivitamin Folic Acid + DHA Softgels), see the back of the bottle.

For clear-bottle products (e.g., Prenatal Gummies), see the back of the pack or the bottom of the bottle.

For Prenatal + Choline boxed product, use the lot number printed on the Prenatal bottle inside the box (not the outer carton or Choline bottle).

Trusted Wellness Experts

Grounded in decades of research, we deliver quality you can count on.

Our Legacy

Our Legacy

Over 50 years of expertise in delivering rigorously tested, high-quality supplements rooted in science.

3rd Party Verification

3rd Party Verification

Nature Made leads the industry in the number of products verified by United States Pharmacopeia (USP) for potency and purity.

Trusted by Pharmacists

Trusted by Pharmacists

Nature Made is the #1 Pharmacist Recommended Vitamin & Supplement Brand.*

From Soil to Supplement: Understanding Environmental Elements

From Soil to Supplement: Understanding Environmental Elements

Trace heavy metals can occur in the environment on their own or from human activities and can be present in soil-grown ingredients, so small amounts may show up in foods and supplements. Our standard is set to keep levels in prenatal supplements much lower than what is found in common foods, such as strawberries, brown rice and spinach.

If you would like to learn more about heavy metals in the environment and in food, visit the FDA website for Environmental Contaminants in Food.

 

 

Commonly Asked Questions

Nature Made experts answer questions about prenatal supplements and product safety.

References
  1. 2001-2014 National Health and Nutrition Examination Survey. Bailey RL, et al. Estimation of Total Usual Dietary Intakes of Pregnant Women in the United States. JAMA Netw Open. 2019 Jun 5;2(6):e195967. https://pmc.ncbi.nlm.nih.gov/articles/PMC6593963/.


‡Prenatal multivitamins containing certain minerals critical to support an expectant person's health and proper development of their fetus may contain trace levels of heavy metals that occur in the environment naturally or from human activities. The levels of heavy metals in prenatal multivitamin ingredients may vary depending on whether and at what levels the prenatal multivitamin contains these ingredients, as well as the location from which the ingredients are sourced. Certain foods containing minerals critical to support an expectant person’s health and proper development of their fetus may also contain heavy metals. For more information, speak with your physician about choosing a prenatal multivitamin that meets your specific nutrient needs.

◆Results shown are batch-specific and may vary. Test results reflect the specific lot numbers listed. Always consult your healthcare provider before starting, changing, or stopping any supplement regimen, especially during pregnancy.

*“#1 Pharmacist Recommended” based on independent surveys. USP Verified mark applies to qualifying prenatal products. Please refer to individual product labels for USP verification status.

†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.