Why we did this audit
Before launching ZMZM Labs in 2025, we wanted to understand what we were entering. We bought 200+ supplements marketed as halal on the US market — from Amazon Brand Stores, mainstream halal supplement brands, "halal-friendly" mainstream products, and small Muslim-founded labels. We checked every label, contacted every manufacturer with verification questions, and cross-referenced certification claims with the actual certifying bodies.
The findings were uglier than expected.
Methodology
Products audited: 207 supplements explicitly marketed as halal, halal-friendly, or halal-certified on the US consumer market in 2025.
For each product, we documented:
- Whether a specific certifying body was named on the label or in the listing
- Capsule or gummy matrix composition
- L-cysteine source disclosure (when present)
- Whether Certificates of Analysis (COAs) were accessible
- Manufacturer responsiveness to verification questions
Top findings
Finding 1: 67% of "halal" supplements don't name a certifying body
Of the 207 products audited, only 67 (32%) named a specific certifying body on the label. The remaining 67% used the word "halal" or "halal-friendly" as marketing copy without disclosure of which body had verified the claim.
Without a named certifying body (IFANCA, ISA, JAKIM, HFA, AHF, or equivalent), "halal" is an unverified claim.
Finding 2: 31% contain porcine gelatin despite halal-labeled contents
Of the products that included capsule or gummy formats, 64 contained porcine gelatin in the capsule or gummy matrix. The active ingredients themselves were halal-labeled, but the delivery format made the final product non-halal.
This is the single most common "halal compliance failure" in the US supplement industry.
Finding 3: 12% use L-cysteine from undisclosed sources
L-cysteine is in many beauty supplements, hair growth formulas, and processed foods. Of products containing L-cysteine, 25 of 209 (12%) used L-cysteine from undisclosed sources — almost certainly the cheap commercial sources (human hair from China, duck feathers).
Finding 4: Only 8% publish Certificates of Analysis
17 of 207 brands made COAs accessible to consumers (either published on the website or available via direct email request within one business day). The remaining 92% either ignored COA requests or directed consumers to retailer-level documentation that wasn't product-specific.
Finding 5: 4 of the 5 best-selling "halal" products on Amazon used pork-pepsin rennet (when applicable)
In the whey protein category specifically, 4 of the 5 highest-ranked "halal" products in Amazon search results used industry-standard pork-pepsin rennet processing. Only one (a UK import) used certified microbial-enzyme rennet.
Finding 6: 22% of products had no manufacturer response to verification questions within 30 days
We emailed every manufacturer with a single question: "Can you specify the source of [ingredient] in this product?" 45 of 207 (22%) did not respond within 30 days. 38 more responded with non-answers (referring us to generic policy pages or marketing materials).
The economics behind these findings
Why is the halal supplement industry this opaque? The economics:
- Halal certification costs $5K-15K/year per facility plus ongoing audits. For a brand selling $500K/year in halal products, this is significant overhead.
- Porcine gelatin is 30-50% cheaper than halal bovine gelatin. Switching capsule material adds 10-15% to product cost.
- Microbial-enzyme rennet whey is 20-30% more expensive than pork-pepsin whey. Halal whey isolate has a structural cost disadvantage.
- Pectin-based gummies cost 2-3x more to manufacture than gelatin gummies. The texture is harder to perfect.
Most brands targeting the halal market do the math and decide that "halal-friendly" on the label is good enough — most consumers won't notice or ask.
What this means for Muslim consumers
Three practical takeaways:
- Always look for a named certifying body (IFANCA, ISA, JAKIM, HFA, AHF). If no body is named, the halal claim is unverified marketing.
- Check the capsule or gummy material explicitly. Look for "HPMC vegetable capsule," "pullulan capsule," or "pectin gummy" — not just "gelatin capsule" or unspecified "gummy."
- Email manufacturers with specific questions. Brands that have done the certification work respond quickly with documentation. Brands using "halal" as marketing copy will deflect or ignore.
What we built ZMZM around
Every learning from this audit shaped how we built ZMZM Labs:
- IFANCA halal certification on every supplement, named on the product page
- Zero porcine gelatin — HPMC capsules and pectin gummies across the entire catalog
- L-cysteine never sourced from human hair or duck feathers
- COAs published on our Lab Reports page per batch
- Microbial-enzyme rennet whey only
- Email response within one business day on any verification question
The state of the industry, mid-2026
The halal supplement category is growing rapidly — estimated $4.6B annually in the US alone. The transparency gap means most growth is captured by brands taking shortcuts.
This audit is our attempt to surface what's happening in the industry, not just because it's relevant to our brand, but because Muslim consumers deserve to know what they're buying.
Methodology notes
This audit was conducted by ZMZM Labs in late 2024 through 2025. We did not pay for any of the audited products beyond standard retail pricing. We did not have commercial relationships with the audited brands. Anonymized product-level data is available on request to journalists and researchers; email support@zmzmlabs.com.
Last updated May 2026.
This article presents original research findings. Statistical claims about specific products refer to a defined audit sample and may not generalize to the entire category. No statements have been evaluated by the FDA.