No More Glyphosate - Weet-Bix

At No More Glyphosate NZ, we’re committed to conducting independent and transparent testing of everyday products for glyphosate contamination.

Following on from our first round of honey testing (see results here), we turned our attention to one of New Zealand’s most iconic breakfast staples: Weet-Bix.

Why Test Weet-Bix?

Weet-Bix is a household name, trusted by generations of Kiwi families for its simple, wheat-based recipe and health-focused marketing. But wheat crops around the world can be exposed to glyphosate during cultivation or harvest (as a desiccant). We wanted to know if any residues were making their way into the final product on our supermarket shelves.

This test was made possible thanks to four generous supporters who stepped up and fully funded the laboratory analysis of four Weet-Bix varieties — making this a true community-powered investigation.

The Samples We Tested

We submitted four different Weet-Bix varieties to Hill Laboratories for testing:

✅ Weet-Bix Original
✅ Weet-Bix Gluten-Free (made in Australia)
✅ Weet-Bix Cholesterol-Lowering
✅ Weet-Bix Multi-Grain (made in Australia)

The Lab Results

Here’s what the testing revealed for each sample:

AMPA (main breakdown product of glyphosate): less than 0.05 mg/kg in all samples

Glufosinate (another commonly used herbicide): less than 0.006 mg/kg in all samples

Glyphosate itself:

Original: < 0.05 mg/kg (not detected)

Gluten-Free (Australia): < 0.05 mg/kg (not detected)

Cholesterol-Lowering: < 0.05 mg/kg (not detected)

Multi-Grain (Australia): 0.56 mg/kg detected

Note: The laboratory detection limits were 0.05 mg/kg for glyphosate and AMPA, and 0.006 mg/kg for glufosinate. “Not detected” means residues, if present, were below these thresholds — or absent entirely.

What does this mean?