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
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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.

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“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.”

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Will Cartwright

Founder

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.

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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.

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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.

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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.

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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.

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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.

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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.

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.

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.

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.

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.

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.

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.