Oxi Lab, Fenbenol
Full Brand & Product Review
Overall Rating: 4 / 10
2026.04.08
REGISTRATION
United Kingdom (Dover), 2025
PRODUCER
No specific laboratory indicated
PRODUCT OPTIONS
222 mg, 444 mg (capsules )
SUBSIDIARY BRANDS
INDEPENDENT CERTIFICATE OF ANALYSIS
Spectrix Analytical Services
Oxi Lab markets itself as a U.S.-based premium fenbendazole supplier through oxilabusa.com and Amazon. A review of USPTO filings, BBB records, Certificates of Analysis, and product listings points to a brand built on a layered identity with significant gaps in accountability.
Overview
Criteria Ratings
1. Information Transparency
Rating: 2 / 10
The consumer-facing brand is “Oxi Lab,” but the registered legal entity is Phoebel LLC. This is confirmed by a BBB profile filed ↗ on June 15, 2025, which lists “OXILAB LLC” as an alternate name using the same phone number and address. Consumers are not informed that their purchase is made through Phoebel LLC.
No owner, founder, or team is identified anywhere. The listed contact email is a standard consumer Gmail account. Legal documents on the website are written in Ukrainian, and the site itself was built by a Ukrainian web agency.
The registered address across official documents is 8 The Green, Suite B, Dover, DE 19901. This is the address of Northwest Registered Agent Service Inc., a service commonly used by anonymous Delaware LLCs.
Amazon listings ↗ identify the manufacturer as “Oxi Lab Prime LLC,” a name that does not appear in any official registry. It does not match the legal entity, the brand name, or the Amazon seller account. Each document references a different name.
2. Label Accuracy
Rating: 5 / 10
The CAS number (43210-67-9) and chemical formula (C15H13N3O2S) are correct for fenbendazole. The claim of “99.9% pure, no fillers” is supported by a single published Certificate of Analysis. Capsule shells are described as plant-based and vegan.
The same product is sold under two different brand names depending on the channel. FENBENCAP is used on the official website, while FENBENOL appears on Amazon. Both trademarks are registered with the USPTO, but under different entities. FENBENCAP is registered to Oxi Lab LLC, while FENBENOL is registered to Oxi Prime LLC.
A customer purchasing from one channel cannot easily identify the same product on the other. This appears to be a deliberate structural separation rather than an oversight.
No supply chain information is disclosed. The purity claim relies entirely on a single test without independent replication.
3. Product Definition
Rating: 6/10
The product consists of fenbendazole powder in plant-based capsules, offered in 222 mg and 444 mg dosages. The FENBENCAP trademark, filed in July 2024, covers both dietary supplements and veterinary use. This is a common regulatory approach that avoids direct “for human use” labeling while still reaching human consumers.
No data is provided on bioavailability or formulation. Fenbendazole is known to have low water solubility and variable oral absorption. There is no information on particle size, dissolution, or delivery characteristics.
4. Manufacturer Traceability
Rating: 2/10
No manufacturing facility is identified. There is no GMP certification, no FDA facility registration, and no disclosure of raw material origin.
The manufacturer listed on Amazon is “Oxi Lab Prime LLC,” a name with no corresponding public registration or verifiable presence.
The only quality documentation provided is a Certificate of Analysis from Spectrix Analytical Services in North Haven, Connecticut.
What the CoA confirms.
UPLC-MS testing using an ACQUITY UPLC BEH C18 column, UV detection at 203 nm and 300 nm, and mass spectrometry confirmation. The tested sample FB-2024-10-10 was identified as fenbendazole with 99.9 percent HPLC purity.
Procedural gaps.
The same individual is listed as both preparer and reviewer, which does not align with standard independent review practices under ISO 17025. The sample was received and reported on the same day. No ISO accreditation number is included in the document.
5. Availability and Distribution
Rating: 6/10
Amazon orders are processed quickly, with same-day handling and global tracking. The direct website has experienced outages, and the listed phone number is frequently reported as unanswered. No physical operating location is disclosed.
6. Public Feedback Patterns
Rating: 3/10
Amazon orders are processed quickly, with same-day handling and global tracking.
The direct website has experienced outages, and the listed phone number is frequently reported as unanswered.
No physical operating location is disclosed.