How to Tell If a Medication or Manufacturer Is Legitimate: A Buyer's Guide to Quality & Safety

The pharmaceutical supply chain is built on trust, but trust without verification is a liability. Pharmacy buyers, distributors, and procurement teams need a clear, repeatable framework for evaluating the products and partners they work with. The tools exist. Here is how to use them.

Start With FDA Registration

Any domestic or foreign establishment that manufactures, repacks, or re-labels drug products for U.S. distribution is required to register with the FDA. To verify a manufacturer's registration status, search the FDA Drug Establishments Current Registration Site by firm name.

Registration is a regulatory floor, not a seal of approval. Its absence typically disqualifies a supplier from serious consideration for U.S.-bound pharmaceutical products, but its presence does not confirm product quality or compliance. The FDA does not issue registration certificates, and any document presented as one should raise immediate concern.

Cross-Reference the Orange Book

For generics, FDA registration alone is not enough. The FDA Orange Book contains therapeutic equivalence (TE) evaluations for all approved multisource prescription drug products. Search it by active ingredient, brand name, or applicant in the FDA's Orange Book search tool. An "AB" rating confirms the product has met FDA's bioequivalence requirements. A "B" code signals unresolved bioequivalence questions. If a generic isn't listed with an "A" TE rating, further scrutiny is warranted before proceeding.

Note that the Orange Book identifies products by the application holder, which may not match the label name. Use the FDA NDC Directory to trace a product back to its approved application when names don't align.

Verify Authorized Trading Partner (ATP) Status Under DSCSA

The Drug Supply Chain Security Act establishes who is legally authorized to transact prescription drugs in the United States. Trading partners must be authorized and can only transact covered prescription drugs with other authorized trading partners. To verify standing independently, check the FDA Drug Establishments Current Registration Site for manufacturers and repackagers, your state board of pharmacy for distributor licensure, and the NABP Drug Distributor Accreditation directory for wholesalers.

Verification should be recurring. As of August 27, 2025, FDA enforcement discretion for wholesale distributors expired, requiring full compliance with ATP verification requirements. Larger dispensers are under active compliance requirements as well, with a small-dispenser exemption (25 or fewer licensed pharmacists or qualified pharmacy technicians) extending through November 27, 2026.

At the product level, all covered drug packages should be imprinted with a unique 2D data matrix barcode encoding the NDC, serial number, lot number, and expiration date. Missing or unverifiable serialization is a concrete red flag.

Recognize the Warning Signs

Beyond databases and barcodes, certain patterns signal illegitimate product or unreliable suppliers: 

• pricing well below market without explanation

• inability to produce complete Transaction Information, Transaction History, and Transaction Statement (the "3Ts" required under DSCSA and retainable for six years

• a facility not appearing in or inactive in FDA's database

• pressure to bypass standard documentation

• packaging inconsistencies such as missing lot numbers or barcodes that won't scan

If a supplier cannot produce complete 3T documentation, quarantine the product and refrain from further distribution. Under DSCSA, a product determined to be illegitimate must be reported to the FDA within 24 hours using Form FDA 3911.

What a Legitimate Manufacturer Looks Like

A compliant manufacturer makes verification easy: active FDA registration, Orange Book-listed products with current TE ratings, documented ATP status, accurate 3T documentation, and quality records available on request. How a supplier responds to verification requests is itself a signal. One that provides documentation promptly and can walk a buyer through its compliance posture has built the infrastructure that trustworthy partnerships require.

At WPRX, our facilities are FDA-registered, our products are ANDA-approved, and our supply chain practices are built around full DSCSA compliance. We welcome the scrutiny.

The FDA's registration database, the Orange Book, and DSCSA's ATP framework give procurement teams a publicly accessible system for vetting both products and partners. Use them consistently, and work only with manufacturers who make that process straightforward.

Learn more about how WRPX ensures transparency and DSCSA compliance.