Easy Wins · 05 · Kids' vitamins
What's actually in your kid's gummy vitamin?
Real third-party lab numbers, mostly from Lead Safe Mama's December 2024 panel of 12 popular children's supplements. Not opinions. Some of the brands you'd guess are clean, are. Several of the loudest "third-party tested" brands aren't. Here's the data, then move on.
- Brands tested (LSM 2024)
- 12
- Detect lead
- 75%
- Detect arsenic
- 58%
- Non-detect, all metals
- 1
ICP-MS, detection thresholds 5 ppb (Pb/Cd/Hg) and 10 ppb (As). Cross-checked against ConsumerLab and brand-published COAs.
Most kids' multis detect lead. One in the panel didn't. The dose is small either way.
Twelve popular kids' supplements went to an independent ICP-MS lab. Nine detected lead, including Hiya, SmartyPants, Renzo's, Pure Encapsulations Junior, and Flintstones (highest of the panel).
The only finished product non-detect for all four metals was Mary Ruth's Organic Toddler Multi Drops with Iron. Ddrops Liquid Vitamin D was also non-detect, single vitamin, simple.
None of these hit panic-level dose. A 2-3g gummy at 50-100 ppb delivers 0.1-0.3 µg/day, well under the FDA Interim Reference Level of 2.2 µg/day for kids. Pick a clean one if a clean one exists at the same price. Then go fix the bigger sources.
The panel
Twelve popular kids' vitamins. The lab numbers.
Lead Safe Mama's December 2024 panel, ICP-MS at an independent lab, detection thresholds 5 ppb (Pb/Cd/Hg) and 10 ppb (As). Where a brand published a specific ppb, I list it. Where the lab reported "positive" without a specific number on the public chart, I mark it that way. Treated as facts, not commentary.
| Product |
Lead |
Cadmium |
Arsenic |
Verdict |
| Mary Ruth's Organic Toddler Multi Drops + Iron |
Non-detect |
Non-detect |
Non-detect |
Buy, only true clean |
| Ddrops Liquid Vitamin D |
Non-detect |
Non-detect |
Non-detect |
Buy, single vitamin |
| Hiya Kids Daily Multivitamin |
Positive* |
Positive |
Positive (highest As in panel) |
Marketing-clean, lab-positive |
| SmartyPants Kids Multi & Omega |
Positive (Aug 2024 lab) |
, |
, |
Lead positive on independent retest |
| Renzo's Picky Eater Multi + Iron |
Positive |
Positive |
, |
Skip |
| Pure Encapsulations Junior Nutrients |
Positive |
Positive (highest Cd in panel) |
Positive |
Practitioner-grade, still positive |
| Seeking Health Kids Multivitamin Chewable |
Positive |
Positive |
Positive |
Skip |
| EllaOla Toddler Multivitamin |
Positive |
Positive |
Positive |
Carries Clean Label Project Purity Award, still positive on all three. |
| Nordic Naturals Children's DHA |
Positive |
, |
, |
Fish-oil source explains it; per-dose is small |
| VitaKlenz for Kidz |
Positive |
, |
Positive |
Skip |
| NovaFerrum Liquid Iron (Yummy) |
, |
, |
Positive |
Iron-only, pediatrician-supervised |
| Flintstones Vitamin + Extra Iron |
Positive (highest lead in panel) |
, |
, |
Skip, pediatrician-default brand, worst result |
*Hiya self-published COAs reporting lead at 35 ppb (July 2021) and 55 ppb (Sep 2020) before LSM's independent retest. Sources: Lead Safe Mama 12-supplement panel, Dec 2024, Hiya lab report, SmartyPants lab report, Consumer Reports 2023. "Positive" = detection above 5 ppb (Pb/Cd) or 10 ppb (As).
"Third-party tested" is mostly true and mostly meaningless.
Almost every brand on this panel says "third-party tested for heavy metals." Many run their tests at detection thresholds of 1,000-5,000 ppb (1-5 ppm), high enough that virtually any consumer supplement passes. Lead Safe Mama's lab uses 5 ppb. That's why brands that pass their own internal "heavy metals tested" bar still light up positive on a real test. The seal that actually carries weight is USP Verified (independently audited contaminant limits). Even then it's not a perfect proxy, EllaOla on the panel above carries the Clean Label Project Purity Award and tested positive for all three metals. Real numbers are the only proxy that holds up.
Dose math
What "positive" means in micrograms.
A typical kids' gummy weighs 2-3 grams. A gummy that just clears the 5 ppb LSM threshold delivers about 0.01-0.015 µg of lead per gummy, roughly 0.5% of the FDA's 2.2 µg/day Interim Reference Level for kids. A worse-end product at 100 ppb delivers ~0.2-0.3 µg, or 10-14%. Nothing on this panel approaches the IRL on its own.
Why it still matters: your kid eats 365 of these per year for years. The cumulative pull is real. And every microgram you spend on the vitamin is one you can't afford to spend on the (much bigger) sources, tap water, painted ceramic dishes, dust in older homes. Pick a clean one, then move on.
The three easy wins
What to actually do tonight.
01
For a multivitamin: Mary Ruth's Toddler Multi Drops + Iron.
Non-detect for all four heavy metals at 5-10 ppb thresholds in the LSM panel, the only true clean result in the set. Liquid drops, not gummies. Slightly less convenient, materially cleaner.
If your kid won't take liquid, the gummy options on the panel all detect lead. Pick whichever is acceptable to you and is the lowest-priced; the per-day dose math is similar across them.
02
For a single-vitamin (D, iron): Ddrops Liquid Vitamin D.
Non-detect on the LSM panel. Most kids on a normal diet don't need a multivitamin, they need vitamin D in winter at northern latitudes, and iron only if their pediatrician says so. A clean single-vitamin beats a contaminated multi. Ask the pediatrician what's actually deficient before buying anything.
03
Skip Flintstones + Iron.
Highest lead level of any kids' vitamin tested in the December 2024 panel. It's the default pediatrician's-shelf option in a lot of practices because Bayer has been making it forever, the in-house QC is not the same as a public, independent lab. Cleaner options exist at the same price.
Quick perspective: your kid is already lower-exposure than you are.
The 2021 CDC reference values put the average American child's blood lead level 10× lower than the average American adult's. American kids today are the lowest-lead generation in recorded history. Stay roughly inside the FDA IRL on the foods your kid eats every day and you're fine. Pick a clean vitamin if you're going to give one. Filter the kitchen tap. Swab old painted ceramic dishes with Fluoro-Spec. Then go to dinner.
Why this matters less than the headline
The vitamin is round-off error. Water and old ceramics dominate.
Even the worst kids' vitamin on this panel, Flintstones + Iron at the high end, delivers a fraction of a microgram per dose. Unfiltered urban tap water can deliver 6 µg per liter on a bad service-line day. Old painted ceramic mugs with worn glaze can leach in the tens-of-µg range per use. The vitamin is the round-off error in your kid's day; the water and the dishes are the dose.
Order of operations: filter the kitchen tap, swab the painted ceramic dishes, then optimize the gummy. /compare has the full ppb-vs-dose math.