Making & Selling Supplements Simplified
We Make Custom Supplements for Your Brand
We simplify supplement manufacturing while maximizing your product’s potential. Through close client communication and collaboration, combined with superior manufacturing quality, premium ingredients, and competitive pricing, we give your brand the edge it needs to stand out in the marketplace.
Working With
Why are so many brands frustrated with their supplement manufacturers?
The Industry Problem
- Minimal Communication: Many manufacturers treat clients as transactions, not partnerships. Emails go unanswered, calls unreturned, and updates come only when prompted.
- Disappearing Act: When challenges arise—production delays, formulation issues, or quality concerns—other manufacturers suddenly become difficult to reach, leaving you to manage customer expectations alone.
- Questionable Quality Standards: Too often, manufacturers cut corners on testing, ingredient sourcing, and quality control to protect their margins—potentially compromising your brand reputation.
- Profit Over Partnership: The industry standard has become prioritizing quick profits over building lasting relationships, with little regard for your brand’s long-term success.
A Partner Who Actually Cares
NutraSeller Answers When Others Go Silent
We’ve walked in your shoes, experiencing firsthand the frustrations of poor communication, quality inconsistencies, and unreliable partnerships that plague the supplement manufacturing industry.
Our founders built NutraSeller specifically to address these pain points, creating systems that prioritize transparency, quality, and genuine partnership at every step.
Your success is intrinsically tied to ours, which is why we’ve reimagined the manufacturer-brand relationship from the ground up—ensuring your vision becomes reality without the typical headaches and disappointments.
“We strive to get you the fastest answers and stay transparent the entire process. With deep collaboration, delivering your product at the highest quality and most competitive price.”
Will Cartwright
Founder
Types Of Products We Specialize In
Supplement Contract Manufacturing Services
Quality Guaranteed
Quality Leader as a USA Supplement Manufacturer
It all starts with our obsession with pharmaceutical-grade quality that turns first-time customers into lifetime buyers.
Our advanced laboratory harnesses cutting-edge UPLC, HPLC, and FTIR spectroscopy technology to verify the identity, purity, and potency of every ingredient that enters our facility.
We exceed standards with rigorous testing at every stage, from raw material verification to finished product analysis, documented with detailed Certificates of Analysis that prove your product’s excellence.
Over 2,450+ successful brands trust our quality processes because we catch what other manufacturers miss, ensuring every supplement meets exact specifications for weight, dissolution, and content uniformity.
Trust in quality that’s made in America – our state-of-the-art manufacturing facilities in NY/NJ deliver the premium standards your brand deserves.
What To Expect With Us
Success Factors With NutraSeller
Be One Of A Kind
100% Unique
Products
We formulate and manufacture your product based on any nutraceutical ingredient formulation you want, giving you infinite possibilities.
Proven Nutrition
Science Backed
Ingredients
Our carefully selected ingredients are supported by rigorous research and testing, ensuring your products deliver real results that customers can feel and trust.
Ready To Launch
Sell On Any
Marketplace
Products we manufacture are ready to sell at any major retailer online or in-store. We provide documentation to sell at Amazon, Tik Tok Shop, Walmart, and anywhere else.
We Make It Simple To Start A Nutrition Brand
3-Step Process To Monetize Supplements & Build A Brand
We simplify success through our three-step process: expert formulation and transparent pricing, precision manufacturing of your supplement, and delivering a market-ready product for your brand to sell.
01
Formulate & Price Your Product
We will work with you to create an amazing and unique ingredient formula with compeititve pricing.
02
We Create Your Finished Supplement Product
Based on your chosen ingredient formula, packaging specifications, and label design we put together a finished product for you start-to-finish.
03
Market & Sell Your Self Branded Supplement
Once finished we will ship your finished product anywhere in the world for you to fulfill orders. Optionally we can store and ship your daily orders for you.
We are proud to work with brands selling at these amazing retailers
Formula To Market-Ready Supplements
The Supplement Manufacturing Process
Step One
Formula Engineering
Our experts optimize your formula for maximum stability and potency, selecting the perfect excipients and flow agents for flawless production.
Step Two
Production Planning
We calculate your ideal batch size, timeline, and resource allocation to maximize efficiency without compromising quality.
Step Three
Raw Material Validation
Every ingredient undergoes rigorous UPLC/HPLC testing before entering our facility - because premium supplements start with perfect ingredients.
Step Four
Manufacturing
Your supplements move through our state-of-the-art facility with precision environmental controls and validated processes at every step.
Step Five
Quality Assurance
Each batch faces comprehensive testing for weight uniformity, content, and packaging integrity before earning approval.
Step Six
Final Verification
Your products undergo final inspection and receive detailed Certificates of Analysis documenting every quality parameter.
Infinite Possibilities
It’s your time to create a one-of-a-kind supplement and vitamin formula that will ROCK your competition. We’re here to help make it happen.
- Expert Guidance
- Endless Possibilities
- Completely Unique
Client Satisfaction Guaranteed
Testimonials
Our clients consistently praise our responsiveness, quality, and commitment to their success—turning first-time customers into long-term partners.
“One of the biggest challenges with contract manufacturers is communication but NutraSeller nailed it. Will was always available answering every question and making sure I felt confident in every step of the process The transparency and attention to detail made a huge difference and I couldnt Definitely a 5-star experience!”
Leslie Anne
USA
“Awesome company to work with! Will was super knowledgeable and helped me move my liquid product line over smoothly. Their R&D team even improved one of my top sellers. Highly recommend NutraSeller for manufacturing.”
Liam Alexander
USA
“I’m a busy physician and entrepreneur, and NutraSeller handled our complex project flawlessly. They navigated every challenge, kept communication top-notch, and delivered beyond expectations. Not the cheapest, but 100% worth it. Highly recommend!”
Lucas Brooks
USA
2,450+
Established Brand
44,000+
Formulas Customized
6,350+
Orders Delivered
100%
Satisfied Clients
Us Versus Them
The NutraSeller Manufacturing Advantage
Here’s the unfiltered truth about building a successful supplement brand with NutraSeller versus the competition.
NutraSeller
- Custom Supplement Manufacturing
- Quality backed by UPLC/HPLC testing
- Transparent competitive pricing
- 24/7 dedicated account manager
- Real-time production tracking
- 100,000+ sq. ft. facility with unlimited scaling
- Fastest order turnaround times
- Premium packaging options
- Amazon-compliance guaranteed
- Free formulation consultation
Others
- Custom Supplement Manufacturing
- Inconsistent quality
- Unclear & high costs
- Unresponsive customer service
- Zero production transparency
- Limited production capacity
- 12+ week delays
- Basic packaging options
- Amazon listing headaches
- Expensive consulting fees
Manufacturing Excellence
Whats Sets Us Apart
Want to know why top supplement brands choose us as their manufacturing partner?
Formula Mastery
We don't just manufacture - we innovate. Whether you're optimizing an existing formula or creating something revolutionary, our R&D team makes it happen.
Brand-Building Edge
Need packaging that flies off the shelves? Our design experts craft labels that capture attention and drive sales in today's competitive market.
Quality Control Obsession
100% in-house production in our advanced facility. We control every step because your brand's reputation deserves nothing less than perfection.
Certification Confidence
Sleep easy knowing your supplements meet every industry standard. Our facility maintains GMP certification and rigorous quality testing protocols.
Delivery Excellence
Tired of manufacturing delays? Our team ensures your products arrive on time, every time - in perfect condition.
Total Transparency
Get real-time updates on your production status, clear timelines, and direct access to our support team. No guessing games, just straight answers.
You May Be Wondering
Frequently Asked Questions
Our FAQ addresses common client concerns with transparent answers about our competitive pricing, design services, flexible minimum orders, realistic production timelines, formulation expertise, and industry-leading quality standards that set NutraSeller apart.
Why can't I go with a cheaper manufacturer?
While lower prices may seem attractive initially, they often come with hidden costs: inferior ingredients, inconsistent quality, poor customer service, and potential compliance issues. At NutraSeller, our pricing reflects our commitment to premium ingredients, rigorous testing, responsive service, and compliant manufacturing—investments that protect your brand reputation and customer satisfaction.
Can you design my label?
Yes, we have in-house designers who create compliant, marketable labels built into your manufacturing price at a discount. Even if you provide your own design, we ensure it meets all regulatory requirements before production begins.
What are your minimum order quantities?
Our flexible MOQs are designed to accommodate brands at various growth stages. For capsules, tablets and powders, our standard minimum is 1,500 units (2,500 units for 30-count bottles). Custom liquids and softgels start at 5,000 units, while custom gummies begin at 15,000 units. We also offer stock premade formula options for softgels and gummies with a lower 1,500 unit minimum, making it easier for new brands to enter the market or test products before scaling up.
How long does the manufacturing process take?
Our production times are significantly faster than the industry standard of 12-16 weeks. For capsules, tablets, and powders, we typically deliver within 6-8 weeks. Custom liquids and softgels require 8-10 weeks, while custom gummies take 10-12 weeks to complete. If you choose our stock softgels and gummies options, we can deliver in just 6-8 weeks. Throughout the process, we provide clear updates so you can confidently plan your launch or restocking strategy.
What if I don't know exactly what formulation I need?
Our formulation experts work closely with you to understand your target market, desired outcomes, and price points to develop custom formulations that stand out. We provide guidance on trending ingredients, effective dosages, and competitive positioning to create products that truly perform.
How do I know your quality standards are truly better?
We are an FDA-registered facility with strict cGMP compliance. Our advanced laboratory harnesses cutting-edge UPLC, HPLC, and FTIR spectroscopy technology to verify the identity, purity, and potency of every ingredient that enters our facility. We exceed standards with rigorous testing at every stage, from raw material verification to finished product analysis, documented with detailed Certificates of Analysis that prove your product’s excellence. And our facility is located in the USA, ensuring adherence to the highest manufacturing standards. We welcome serious clients to come to our facilities to take a tour to see for themselves.
WE ARE HERE FOR YOU 24/7 - CALL/TEXT/EMAIL/WHATSAPP YOUR ACCOUNT MANAGER 24/7 DIRECTLY TO THEIR CELL PHONE - We'll Answer promptly every time.
Lets Formulate And Price Your Supplement Project
You need a supplement manufacturer who relentlessly communicates with you, actively collaborates, and updates you promptly during each step of the manufacturing process. Our collective goal as a company is to manufacture the best supplement product for your brand by being close to you during the entire process.