Ready to build your supplement brand the right way?
Book a free 30-minute strategy call - we'll map out what your launch actually needs.
End-to-End Supplement Brand Development
We Build Supplement Brands Designed to Succeed.
CJK Sourcing+ partners with eCommerce founders to research, formulate, source, and launch supplements that sell - on Amazon, DTC, and retail. Commercially viable 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
Our Services
CJK Sourcing+ builds supplement brands end to end.
We work with founders who want to launch properly - with a validated
formula, trusted suppliers, and the commercial infrastructure to sell.
Market research & product strategy
Branding assets, packaging & label copy
Shopify builds & launch tech setup
Supplement formulation (human & pet)
Supplier sourcing & manufacturing
Compliance support for UK, EU & US markets
Not everything needs to happen at once.
We scope work based on your stage, goals, and constraints.
The CJK Brand Build System
Five Steps. One Launchable Brand.
A proven framework built from launching real brands - not theory. Every step is designed to de-risk the next.
Market & Positioning Validation
We analyse demand signals, competitor gaps, and pricing dynamics to confirm your concept has a viable market before you invest further.
Formula Strategy & Regulatory Design
Your formula is built for the right market - compliant dosing, active ingredient selection, and claims that hold up under regulatory scrutiny.
Manufacturer Matching & Negotiation
We shortlist vetted manufacturers from our network and negotiate pricing, MOQs, and lead times on your behalf.
Packaging, Compliance & Testing
Design, label copy, third-party testing, and regulatory sign-off - all coordinated so your product arrives shelf-ready and audit-proof.
Retail Launch Readiness
Listings, logistics, and go-to-market assets prepared so launch day is a planned event, not a scramble.
Trusted by Founders.
Juici Supplements
"They opened doors we didn't even know existed. The knowledge of formulation, sourcing, manufacturing and compliance is exceptional"
-
Abe
,
Juici
Nudge
"Cat was absolutely first class in helping us launch our supplement. She went out of her way to find a reliable UK supplier and secured a fantastic price for our products. We're genuinely grateful for all the guidance and support."
-
Kevin R
,
Nudge
MagFit
"Cat has been absolutely incredible in supporting me on my journey as a first-time founder. She helped me secure a great price and a low MOQ for my first product, which made launching realistically possible. I genuinely couldn't recommend her enough."
-
Founder
,
MagFit
Rubeth's
"Cat helped me move forward fast. We had an agreed price with a UK manufacturer within a week. Her experience and contacts were invaluable in shaping the final stages of my product."
-
Shaun C
,
Rubeth's
Novacore Nutrition
"Working with Cat as my supplement sourcer was an incredibly smooth and professional experience from start to finish. She guided me through the entire process with clarity, honesty, and genuine expertise. Timelines were always clear and realistic, communication was excellent, and I felt supported at every stage. I was confident my brand was in safe hands throughout the process."
-
Gianmarco
,
Novacore Nutrition
Low MOQs
Start Small, scale fast
Exclusive Supplier Deals
Rates you can't get along
Regulatory-Ready
EU, UK & US compliant
End-to-End
Formuation to launch
Vetted Manufacturer Network
250+ brands launched
Low MOQs
Start Small, scale fast
Exclusive Supplier Deals
Rates you can't get along
Regulatory-Ready
EU, UK & US compliant
End-to-End
Formuation to launch
Vetted Manufacturer Network
250+ brands launched
Low MOQs
Start Small, scale fast
Exclusive Supplier Deals
Rates you can't get along
Regulatory-Ready
EU, UK & US compliant
End-to-End
Formuation to launch
Vetted Manufacturer Network
250+ brands launched
Book a Strategy Call
Formats
Every Format. Every Market.
We work across the full range of supplement formats - and help you choose the right one for your product, not just what's trending.
Gummies
High consumer appeal - ideal for DTC, retail, and Amazon launches.
Capsules
The most versatile format - suits a wide range of actives, markets, and dose sizes.
Powders
Tubs and sachets for pre-workouts, greens, collagen, and high-dose stacks.
Licaps
Liquid-filled capsules for oil-based actives and premium market positioning.
Oral Pouches
Strong traction in European markets - functional wellness and nicotine-alternative.
Stick Packs
Single-serve sachets for on-the-go formats - electrolytes, sleep, and collagen.
Liquids & Syrups
Shots, tinctures, and bottled formats for both human and pet supplement lines.
Ready-to-Drink Shots
High-margin, retail-ready format with strong pharmacy and health food placement potential.
Our Work
From Concept to Retail-Ready
Every brand in our portfolio started as an idea. We turned it into a product that sells.
Advanced Probiotic Formula
Gut health supplement built for the UK market - 30 Billion CFU, GMP certified, retail-ready.
Electrolytes. Elevated.
Premium hydration formula with Pink Himalayan Salt, Potassium and Magnesium - DTC and Amazon-ready.
10-in-1 Menopause Support
A clinically-informed blend for perimenopause and menopause - built for the growing women's health market.
Morning + Night Nootropic System
Two-step cognitive performance stack - energy and focus by day, recovery by night.
Who We Work With
Built for Founders Who Think Commercially.
We work best with founders who want real answers - not reassurance.
Are building or expanding a supplement brand
We work with both new founders launching their first product and established supplement brands looking to scale, optimise, or improve their supply chain.
Care about commercial reality, not just ingredients
Many supplement manufacturers will talk endlessly about ingredients, trends, and buzzwords. Because a great formula means nothing if you can’t produce it reliably or sell it profitably.
Want fewer surprises and better decisions
Launching supplements comes with hundreds of decisions, from formulation and MOQs to packaging, testing, and logistics. We help you see the full picture before you commit, so you avoid costly mistakes and delays. The goal is simple: clear information, better decisions, and smoother launches.
Value straight answers over sales talk
This industry is full of overpromises and vague answers. We believe in direct, practical guidance, even when the answer isn’t what you hoped to hear. If something won’t work commercially, we’ll tell you. If it will, we’ll help you build it properly.
We help you choose the right format for the product and the market, not just what’s trending or easiest to producet
End-to-End Support
Why CJK Sourcing+
CJK Sourcing+ was built by people who have actually launched and scaled supplement brands across Amazon, DTC, and international markets.
We've dealt with reformulations, supplier failures, compliance friction, and costly delays firsthand - and we built this business so founders don't have to learn those lessons the hard way.
We don't sell you a dream. We tell you what's real, what's viable, and what it actually takes to build a brand that sells.
265+
Brands Launched
3
Markets
8+
Formats
If you're serious about launching – let's talk.
Most founders waste months and thousands before getting the right guidance.
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
