Your Private Label Supplement Partner in Southern California
Nature's Supplements Inc. handles every step — from sourcing premium ingredients to encapsulation, quality testing, labeling, and fulfillment. We specialize in small-batch orders so emerging brands get the same care as enterprise clients.
NSF Certificate of Conformity
FDA-Registered Facility
cGMP Compliant
Solar-Powered Production
In-House QA Laboratory
Small-Batch Specialists
A Family-Owned Manufacturer Built on Precision and Trust
Founded in 1999 by Arturo and Gabriela Costilla, Nature's Supplements Inc. has grown from a small Carlsbad operation into a 20,000 sq/ft solar-powered facility in Oceanside, California — without ever losing the personal attention that defines a family business.
We specialize in the private label and contract manufacture of vitamins, minerals, botanicals, and nutritional supplements. Whether you're launching a single SKU or a full product line, our production team handles sourcing, blending, encapsulation, quality testing, and fulfillment under one roof.
Our Story →End-to-End Manufacturing Under One Roof
From raw ingredient sourcing to palletized delivery — we eliminate the complexity of multi-vendor supplement production.
Ingredient Sourcing
We source the highest-quality organic and conventional raw materials from vetted, certified suppliers — domestic and international.
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Mixing & Encapsulation
Precise blending of multi-ingredient formulas, then encapsulated in gelatin or vegetable (HPMC) capsules in your specified size.
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Quality Assurance
Dual-stage testing: raw material inspection on intake, then finished-product testing before release. cGMP compliant throughout.
Learn more →Packaging & Fulfillment
Bottling, labeling, retail boxing, and palletizing. Ship via common carrier or pick up at our freight dock in Oceanside.
Learn more →From Formula to Fulfilled Order in 8 Steps
Our streamlined process keeps you informed at every stage and ensures your product meets spec before it leaves our facility.
Start Your OrderReceive Your Specification
Submit your formula, target capsule size, serving size, and quantity. We confirm feasibility and provide a quote.
Source Premium Ingredients
We procure your raw materials from qualified suppliers, verifying certificates of analysis (COA) before acceptance.
Blend to Exact Ratios
Ingredients are weighed and blended in our dedicated mixing room following cGMP procedures.
First QA Inspection
Pre-encapsulation testing confirms blend homogeneity, potency, and absence of contaminants.
Encapsulate
Product is encapsulated in gelatin or vegetable capsules on our automated encapsulation lines.
Second QA Inspection
Finished capsules are sampled, tested, and certified before any packaging begins.
Bottle, Label & Package
Your product is bottled, labeled per your specifications, packed into retail boxes, and palletized.
Ship or Dock Pickup
We dispatch via common carrier to your distributor, or you can collect from our Oceanside freight dock.
Our Oceanside Facility
A modern 20,000 sq/ft GMP-compliant facility powered by renewable solar energy in Oceanside, California.
Clean-Room Encapsulation
Stainless-steel capsule filling machines operated in controlled-environment encapsulation cabins.
In-House QA Laboratory
State-of-the-art testing equipment for identity, potency, and microbiological screening of every batch.
Fulfillment & Storage
Ample storage for raw materials and finished goods, with a dedicated freight dock for outbound shipments.
cGMP Manufacturing You Can Stand Behind
We operate under FDA Current Good Manufacturing Practices (cGMP) and hold an NSF Certificate of Conformity. Every lot is traceable from raw ingredient through finished product — giving your brand and your customers complete confidence.
Supplement Industry Insights
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How Quality Control Makes the Difference in Supplements
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Read ArticleFrequently Asked Questions
Get answers to the most common questions about private label supplement manufacturing, minimum orders, lead times, and compliance. Don't see yours? Contact us directly.
Full FAQ →What is the lead time for my order?
Most orders are fulfilled within two weeks, depending on order size and raw material availability. Rush production may be available — contact us for details.
Is there a minimum order quantity (MOQ)?
We specialize in small-batch production — one of our key differentiators. Contact our customer service team for the minimum quantity applicable to your specific formula and capsule type.
Can you help with FDA compliance?
Yes. The FDA has regulatory authority over dietary supplements. We offer guidance on labeling requirements, cGMP documentation, and Supplement Facts panel development as part of our service.
Do you offer vegetarian capsules?
Yes — we encapsulate in both gelatin (bovine or porcine) and HPMC (hydroxypropyl methylcellulose) vegetarian capsules in various sizes to suit your formula and market.
Where is your facility located?
Our 20,000 sq/ft production facility is at 1342 Rocky Point Drive, Oceanside, California. Customers are welcome to visit and arrange freight dock pickups.
What Our Clients Say
Trusted by brands from launch to scale — here's what manufacturing partners share about working with NSI.
"NSI's small-batch capability changed everything for our launch. We tested and iterated without the minimum-order pressure other manufacturers imposed. Six years later, they're still our first call."
"The NSF certification and in-house QA lab gave our retail buyers the documentation they required. NSI's paperwork is impeccable — every batch ships with full traceability and a signed COA."
"Two-week lead times are real — not marketing language. We've run 17 batches and NSI has delivered on schedule every single time. That consistency is genuinely rare in contract manufacturing."
Ready to Launch Your Supplement Brand?
Join the brands that trust Nature's Supplements Inc. for consistent quality, fast turnaround, and honest partnership. Request your free quote today.