What US and UK Brands Should Ask Indian Manufacturers Before Signing
The sales call was good. The samples looked fine. The pricing was better than anything you'd found domestically. You signed.
Twelve weeks later, the first batch comes back with probiotic counts that don't match the CoA. Or the vegan label claim turns out to rely on a gelling agent that isn't fully plant-based. Or your UK importer flags a documentation gap that's going to hold up customs clearance for your product launch.
These aren't horror stories - they're patterns. And they're almost always avoidable with the right due diligence before you commit to a supplement manufacturing partner in India.
This is the question list US and UK brands should work through before signing any contract manufacturing agreement with an Indian supplement producer.
Why This Due Diligence Matters More Than It Did Five Years Ago
The regulatory environment in both the US and UK has tightened, and consumer scrutiny has increased. A product that fails a shelf-life test, carries a misleading label claim, or clears customs once and gets flagged the second time is a brand problem - not just a manufacturing problem.
For brands building real equity in the supplement space, the manufacturer is not a vendor. They're a partner whose quality systems, compliance infrastructure, and formulation integrity are directly tied to your brand's reputation.
The good news: India has some exceptional manufacturers at the top end of the market. The due diligence process is how you find them.
Section 1: Facility and Regulatory Credentials
Q1: Is your facility US-FDA registered?
For any product sold into the US market, this is non-negotiable. Ask for the FEI (Facility Establishment Identifier) number and verify it independently on the FDA's official website. Registration needs to be current - it expires every two years.
Q2: What GMP standard does the facility operate under?
Look for WHO-GMP, 21 CFR Part 111 (US FDA GMP for dietary supplements), or equivalent. Ask to see the GMP certificate, not just a claim.
Q3: Has the facility been audited by a third party?
Many serious manufacturers have undergone audits by international quality bodies or by existing clients. Ask whether third-party audit reports are available for review under NDA.
Q4: What is your FSSAI license status?
FSSAI (India's domestic food safety regulator) approval is the baseline. If a manufacturer isn't FSSAI-compliant for domestic Indian standards, they're certainly not ready for international markets.
Explore Export-Ready Manufacturing
Section 2: Formulation Capability
Q5: Who leads your R&D, and what are their qualifications?
This question separates manufacturers who have genuine formulation science from those who have access to standard ingredient databases and equipment. A doctorate-level formulation scientist with pharmaceutical or nutraceutical R&D experience is a meaningful differentiator. Ask for the team's credentials, not just a title.
Q6: Do you hold any patents relevant to your formulation technology?
IP in nutraceutical manufacturing - particularly around probiotic stabilisation, oil encapsulation, or novel delivery systems - is a signal that a manufacturer has developed solutions that aren't available at standard contract facilities. Patents in the US, EU, or Canada specifically require rigorous technical examination. They're not marketing claims.
Q7: Can you formulate in a fully vegan, pectin-based gummy base?
If your target market includes UK consumers, the vegan credential matters. Confirm that the facility uses pectin or agar-pectin - not gelatin - and that there's no cross-contamination from gelatin lines if vegan integrity is important to your brand.
Q8: What is your track record with complex or high-load formulations?
Ask for examples. A manufacturer who has successfully delivered a 14-ingredient eye health gummy, or a probiotic gummy with 3 billion CFU at end of shelf life, or an 800 mg NAC formulation with effective flavour masking, has demonstrated formulation depth that a standard contract manufacturer hasn't.
Learn about Probiotic Gummies Manufacturing
Section 3: Probiotic-Specific Questions
If your product carries a probiotic or live culture claim, these questions are critical.
Q9: At what stage of gummy manufacturing are probiotics introduced?
Probiotics should be introduced after the cooking/heating stage, at the lowest temperature point in the process. If a manufacturer introduces them into the hot base, expect significant viability loss.
Q10: What is your validated CFU count at end of shelf life - not just at manufacture?
This is the meaningful number. A product that starts with 10 billion CFU and degrades to under 1 billion by month 18 isn't delivering what the label claims at the point of consumption. Ask for stability data that shows viable counts across the shelf life period.
Q11: Do you use any protective encapsulation or stabilisation technology for probiotic strains?
Standard lyophilised probiotic powder has no protection from heat, pH, or moisture. A manufacturer who has developed - and preferably patented - a microencapsulation or stabilisation system has solved a problem that most competitors haven't.
Section 4: Quality Control and Documentation
Q12: What does your batch testing process look like?
A serious facility tests each batch against a full specification - not just an identity test for key actives. Ask what parameters are tested, which tests are done in-house versus by accredited third-party labs, and what happens when a batch fails.
Q13: Can you provide accelerated and real-time stability data for your formulations?
For most UK and US market launches, you'll need stability data to support the shelf-life claim on your label. Ask whether this data exists for your specific formulation, or whether it needs to be generated as part of your development timeline.
Q14: What documentation can you provide with each commercial batch?
At minimum, you should receive:
- Certificate of Analysis from an accredited lab
- Allergen declaration
- Country of origin for key ingredients
- Batch manufacturing records (available on request)
- Relevant certifications (vegan, halal if applicable)
A manufacturer who treats documentation as an afterthought will create problems for you at customs, with retailers, or during a regulatory review.
Section 5: Commercial and Operational Questions
Q15: What is your MOQ for a new SKU, and what does the development batch process look like?
Understand the minimum commitment before you're at commercial scale. Some manufacturers will run a formulation development batch or a stability run at a lower quantity - which is the right approach for a new product that hasn't yet been market-tested.
Q16: What is your typical lead time from purchase order to shipment?
Factor this into your launch planning. For custom formulations, 12–16 weeks is typical. For catalog products with existing stability data, it can be faster. Understand what can accelerate or delay this timeline.
Q17: Do you have experience with shipping to US or UK customs specifically?
Not just manufacturing for export - but actually having shipped, cleared customs, and resolved issues with US or UK importers before. A manufacturer with this track record will have the documentation habits and logistics knowledge that make international shipping smoother.
Q18: What is your NDA and IP protection policy?
Your formulation is your IP. Confirm in writing that the manufacturer will not produce the same formulation for other brands without your consent, and that they will not use your brief to develop competing products.
What a Good Answer Looks Like
You're not looking for a manufacturer who says yes to everything. You're looking for one who answers these questions with specificity, offers documentation rather than assurances, and flags where trade-offs exist rather than overselling.
The best supplement manufacturing partners in India will tell you when a formulation isn't feasible at your budget. They'll share stability data even when it reveals limitations. They'll push back on a brief that's likely to fail rather than take the order.
That kind of honesty is a feature. It's the sign of a partner who understands that your brand's success is their reference case.
A Final Check: The Reference Request
Before signing, ask for one or two existing client references - ideally brands who have shipped to the US or UK market from this manufacturer. A five-minute conversation with a brand manager who has gone through the process is worth more than any brochure or certification copy.
If a manufacturer is reluctant to provide references, that's meaningful information.
Evaluating Your Next Manufacturing Partner?
If you're a US or UK brand mapping your supplement manufacturing options in India and want to work through these questions with a team that has the formulation depth and compliance infrastructure to answer them properly - let's talk.
Share your brief with our team, and we'll give you a straight answer on what we can build, what the timeline looks like, and what documentation you'll have in hand at each stage.
We also recommend reviewing our guide on exporting nutraceuticals from India before your first conversation with any manufacturer - it covers the regulatory context in detail. Read: Exporting Nutraceuticals from India
FAQ
Do I need to visit the manufacturing facility in India before signing? Ideally, yes - particularly for high-volume or long-term partnerships. Many facilities offer virtual audits for initial due diligence. In-person visits for US-FDA-registered facilities are straightforward to arrange and worth doing before your first commercial batch.
What is the difference between a US-FDA registered facility and an FDA-approved facility? Dietary supplement manufacturers in India (or anywhere) must be registered with the US FDA if they sell into the US market. The FDA does not "approve" supplement facilities in the way it approves pharmaceutical plants - but it does inspect registered facilities and can issue warning letters or import alerts for non-compliant ones.
Can an Indian manufacturer help with product label design for the UK or US market? Some can, but label compliance for regulated markets should be reviewed by a qualified regulatory consultant in the target market. Your manufacturer can provide the technical data you need (ingredient levels, allergens, stability-justified shelf life), but the final label compliance responsibility sits with the brand and importer.
What's a reasonable timeline to build a private label gummy supplement from brief to shelf in the UK? From initial formulation brief to product on shelf, budget 6–9 months for a custom formulation. This includes formulation development (6–8 weeks), pilot batch (2–3 weeks), stability initiation, commercial production (6–8 weeks), shipping, customs clearance, and retailer onboarding. Tight timelines are possible with catalog products and existing stability data.
What happens if a batch fails QC after it arrives? This depends entirely on your contract. Ensure before signing that your agreement specifies the batch rejection process, liability for failed batches, and whether the manufacturer covers rework or replacement costs. A manufacturer who doesn't engage seriously with this question in contract negotiations is telling you something.
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