If you're serious about launching – let's talk.
Book a free discovery call. We'll understand your goals, be honest about what's possible, and tell you exactly what working with CJK would look like.
About CJK Sourcing+
Built Operators,
Not Middlemen
We help supplement brands validate, source, formulate, and launch products with commercial clarity from day one.
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
End-to-End Support
From Industry Gaps to Real Solutions
CJK started as a specialist formulation and sourcing partner, working closely with supplement founders across the UK and Europe. The work was operational and specific — connecting founders with the right manufacturers, validating formulations, and navigating a supply chain that is genuinely difficult to move through alone.
Over time, a pattern became clear. Most challenges didn't start at the supplier level. They started earlier — with positioning decisions made before demand was validated, compliance considerations discovered after packaging was locked, or formulation choices made before a commercial rationale existed.
CJK Sourcing+ is the natural result of that experience. We expanded scope not to become an agency, but to give founders the commercial grounding they needed before the operational work began. From market research and formulation through to sourcing, branding, manufacturing, and launch readiness — one partner, not five.
Operational credibility
Built for Supplement Founders
265+
Supplement brands built
UK, EU & US
Compliant market support
10yr
Industry sourcing expertise
~18wk
Avg. concept-to-launch time
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
"Working with Cat was one of the best decisions we made. Her knowledge of supplements, formulation costing, packaging, and manufacturing is exceptional — and the UK manufacturer network opened doors that would have taken us years to find alone."
Abe, Juici Supplements
UK Wellness Brand · Capsules & Powders
Operating principles
How We Build Brands
Market demand comes before formulation
Every engagement starts with market validation — understanding the buyer, the demand, and the commercial opportunity before formulation begins.
Commercial viability matters as much as ingredients
A product only works if the economics work. Every decision is evaluated against margins before moving forward.
Well-made products outperform complexity.
Clear, well-positioned products outperform complex ones with unclear positioning — especially in Amazon and DTC markets.
One partner beats five vendors.
Fragmented supply chains create fragmented accountability. We manage the process end-to-end.
What we actually do
Operational Infrastructure
We support founders who want to launch properly — with clarity on demand, a commercially sound formula, trusted suppliers, and the infrastructure to sell.
Market Research & Validation
Category sizing, competitive mapping, demand validation, and product opportunity identification — before any formulation begins.
First-time supplement founders
Supplement Formulation
Human and pet supplement development. Ingredient selection, dosage rationale, compliance review — UK, EU, and US markets.
Early Stage
Supplier Sourcing & Manufacturing
Vetted manufacturer shortlisting, MOQ and pricing negotiation, production onboarding, and ongoing supplier management.
Build Phase
Branding, Packaging & Copy
Positioning strategy, visual identity, packaging design, and label copy that meets regulatory requirements and sells at shelf.
Build Phase
Shopify Builds & Amazon Setup
DTC store builds, Amazon listing creation, A+ content, and launch infrastructure — functional, on-brand, and conversion-ready.
Launch Ready
Compliance Support
Regulatory guidance across UK, EU, and US markets — from labelling requirements to claims substantiation and novel food considerations.
Ongoing
The people in your corner
Not consultants. Operators.
Founder, The Formula+
Cat King
250+ supplement brands built. Background in technical sales and leadership with deep expertise across formulation, sourcing, regulatory positioning, Amazon, DTC growth, branding, and go-to-market strategy. The Formula+ was built because founders needed more than scattered advice. They needed a room.
250+
brands built
UK/EU/US
markets covered
10+
years experience
Meta & E-commerce Growth
Charles
Shopify and Meta partner who builds and scales e commerce brands. He's sold three brands and is actively launching new brands. He's not teaching from a textbook, he's in it daily, obsessed with Meta ads, creatives, and offers that convert.
Paid Media & Growth Strategy
Marion Vitrat
12 years across Meta, Google, LinkedIn, CRM, SEO, and growth strategy. Former CMO and digital growth leader across multiple scale-ups and international brands.
Email & SMS - Klaviyo Partner
Grace
Official Klaviyo partner with 10 years of daily hands-on experience helping brands build retention from day one. Speaker at the Klaviyo London Conference 2024 on demystifying customer data.
HEAD OF COMMUNITY
Gordon
20 years supporting SMEs across HP, Google and GoDaddy.
Focused on maintaining quality, accountability and a high-signal founder environment.
TikTok & Social Growth
Tamara
Tamara is a TikTok and social media growth specialist with expertise in running campaigns, creative production, and performance marketing. She knows exactly what content actually converts.
Organic Social & Content Strategy
Dara
Dara has created content professionally for 15+ years, starting in fashion editorials before moving into social media. She helps brands build their voice, online presence, and content strategy.
Compliance, Copy & Nutrition
Vicki
Registered dietician and compliance specialist with deep expertise in UK and EU supplement regulations. She covers claims and product copy, so your brand says the right things without putting the business at risk.
digital ads master
Tom
Tom is a UK digital ads expert who’s grown household names across startups and major corporates, with over $50m spent on Meta Ads, Google Ads, and more. He helps new eCommerce brands scale through paid advertising.
Who this is for
Built for the Right Partners
CJK works best with brands focused on building sustainable supplement businesses — not shortcut launches.
Who CJK is built for
Early-stage and established brands expanding into new categories, formats, or markets with the right operational support.- Founders building real supplement brands with clarity, accountability, and experienced end-to-end support.
- People who value accountability and want one trusted partner managing the process end-to-end.
Who it is not built for
Founders looking for design-only support. We integrate branding and packaging, but we’re not a standalone creative agency.- Brands prioritizing speed and low cost over strong commercial foundations are not the right fit for CJK.
- Founders expecting guaranteed outcomes. We provide clear guidance and strong execution — the market decides the rest.
Engagement models
A Note on Our Role
We don't guarantee outcomes, and we don't pretend to control the market. What we provide is clarity, experience, and practical support — so you can move forward with confidence and avoid the most common and most costly mistakes.
Our role is to reduce operational friction and improve decision quality at every stage of the build. Whether that's a single scoped engagement or an ongoing partnership, the standard is the same: you get honest information, experienced execution, and a clear view of what's actually involved.
Book a Strategy Call
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
UK, EU & US compliant manufacturing
Amazon, DTC & retail-ready builds
Built by operators, not consultants
Human & pet supplement specialists
Vetted manufacturers across 3 markets
End-to-end brand development
