How to Choose an Indian Pharmaceutical Exporter: A Buyer's Due-Diligence Checklist

1. Confirm Legal Identity and Business Model

Start with the basics: the registered company name, address, and the licences under which the company manufactures or exports medicines. The company name on the quotation, invoice and certificates should match.

Ask a direct question: is the company the manufacturer, or an exporter supplying products made by qualified manufacturing partners? Both are legitimate and common. The important points are transparency about which site makes each product, and a clear agreement on who is responsible for quality, documentation and complaints.

2. Check GMP Evidence for the Actual Manufacturing Site

Request the GMP certificate for the site that will manufacture your products, and check three things: that the site address matches the dossier and COPP, that the certificate covers the dosage forms you want (tablets, capsules, oral liquids and so on), and that it is valid for your planned submission date.

For larger or long-term programmes, ask whether the supplier will accept a remote or on-site audit, and whether a Site Master File can be shared. Willingness to be audited is itself a useful signal. Our guide to WHO-GMP in pharmaceutical manufacturing explains what GMP covers.

3. Review Dossier Availability and Quality

For registration markets, the dossier is as important as the product. Ask which of your products have a dossier available, in which format (CTD, eCTD or ACTD), and what stability data supports it.

If possible, review a sample module or table of contents before committing. Look for:

• Specifications that reference a current pharmacopoeia edition accepted in your market.
• Stability data at the climatic-zone conditions your regulator requires, in the pack you plan to sell.
• Process validation and analytical method validation information.
• Bioequivalence information where your regulator requires it for that product.
• Clear ownership: whether you, the supplier or a local agent will hold the registration.

4. Ask How Quality Is Controlled Batch by Batch

Ask how raw materials are tested, how finished batches are released and what a typical Certificate of Analysis looks like. Request a sample COA and compare its tests and limits with the specification in the dossier.

Also ask how the supplier handles deviations, complaints and recalls, and how quickly they can provide batch documentation if a regulator asks. Our article on quality control from raw material to finished product covers what good practice looks like.

5. Evaluate Packaging and Labelling Capability

Packaging affects stability, registration and how the product sells. Confirm which pack formats are available, such as Alu-Alu or PVC/PVDC blisters, bottles or sachets, and whether the supplier can work to your labelling language and artwork requirements.

For private-label programmes, ask how artwork is proofed and approved and who checks it against the registered product information. Mistakes on artwork are expensive to fix after printing.

6. Test Communication and Responsiveness

During evaluation, notice how the supplier responds. Are technical questions answered by someone who understands regulatory and quality topics? Are answers specific to your products and market, or generic? Do documents arrive complete and consistent?

Responsiveness during the sales stage is usually the best predictor of how regulatory queries will be handled later, when deadlines are tighter.

7. Compare Commercial Terms Like for Like

Price is only comparable when everything else is. Make sure each quotation states the same product, strength and pack, the Incoterm, payment terms, minimum order quantity, lead time and the minimum remaining shelf life on delivery.

A noticeably lower price can reflect a different pack, shorter shelf life or missing documentation. Ask the question before assuming a saving.

Warning Signs

Treat these as reasons to pause and ask more questions:

• Certificates that name a different site or company from the one quoting.
• Reluctance to say which facility manufactures the product.
• Claims of registration or approval in markets that the supplier cannot document.
• No sample COA, or a COA that does not match the dossier specification.
• Pressure to pay in full before documents and terms are agreed in writing.

Evaluating Zelnex

Zelnex Pharmaceuticals is an export-oriented supplier based in Surat, Gujarat, offering WHO-GMP manufactured generic formulations, CTD/eCTD dossier support, private labelling and export documentation. We welcome the questions in this checklist. Review our regulatory and manufacturing services, browse the product catalogue, and see why international buyers choose Zelnex.

Send your product list and target market through our contact page to request a quote, and our export desk will share the documentation available for each product.