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Radical transparency

Every batch. Every metal.
Every result, public.

Every Gutsies batch is tested by an independent ISO-accredited lab and certified against Heavy Metal Tested & Certified (HMTc) limits — stricter than what federal law requires for kids' supplements. Look up your jar below.

Find your batch

The lot number is printed on the bottom of your jar — it looks like TT-2606A. Try one of the demo lots: TT-2606A, FF-2605B, CT-2604A.

Latest batches

Tiny Tummies · Lot TT-2606A · Jun 12, 2026
PASS ✓COA ↓
Gutsies Drops · Lot GD-2606C · Jun 09, 2026
PASS ✓COA ↓
Fiber Friends · Lot FF-2605B · May 28, 2026
PASS ✓COA ↓
Happy Belly Bites · Lot HB-2605A · May 16, 2026
PASS ✓COA ↓
Calm Tummies · Lot CT-2604A · Apr 15, 2026
PASS ✓COA ↓

Our formulation standards

Never inside
✕Sugar alcohols (maltitol, sorbitol) — poorly absorbed and can irritate the gut barrier, causing the exact GI upset a gut product should prevent
✕Synthetic dyes (Red 40, Yellow 5) — color comes from fruit and vegetable juice only
✕Glucose syrup & artificial sweeteners — 2g of sugar per gummy, from real fruit
Always
✓Named strains on the label (e.g. Bacillus subtilis DE111®) — never a mystery "probiotic blend"
✓CFU counted at end of shelf life, not at manufacture — the dose on the label is the dose in month 18
✓Age-specific formulation — Bifidobacterium-forward for infants, fiber-forward for school-age kids

Why we test every batch

Heavy metals like lead and arsenic occur naturally in soil — which means they can end up in any food, especially products made for tiny, developing bodies. Spot-checking isn't enough.

What HMTc means

Heavy Metal Tested & Certified is an independent standard with per-serving limits for lead, arsenic, cadmium, and mercury set specifically for children's products — stricter than federal requirements.

Who does the testing

Independent ISO/IEC 17025-accredited labs we don't own, using ICP-MS analysis. We publish results as-is — passes and, if it ever happened, failures. Failed batches never ship.