Quality & Manufacturing

Quality, Integrity, and Innovation From Start to Finish

At GSI, quality isn’t an afterthought; it’s the foundation of everything we do. From ingredient sourcing to product formulation, every step of our process is built around safety, transparency, and scientific precision. We take pride in crafting products that meet the highest standards in the industry and deliver the consistency our customers expect.

Our Manufacturing Network

Giant Supps proudly operates through two state-of-the-art manufacturing facilities in the United States:

  • Texas Facility
    Is an industry leader in sports nutrition and supplement manufacturing. The facility is cGMP-certified, NSF-audited, and specializes in protein powders, functional beverages, and powdered formulations. Each batch produced undergoes rigorous quality assurance testing to verify purity, potency, and ingredient accuracy.
  • North Carolina Facility
    Our newest manufacturing location in North Carolina represents the next step in our growth. This facility focuses on gummy and confectionery products, expanding our capabilities to serve customers who want convenient, great-tasting supplements without compromising efficacy. Built with modern production and sanitation technology, it allows us to innovate in emerging product categories while maintaining the same GSI quality standards.

Commitment to Quality & Compliance

Every GSI product is:

  • Manufactured in cGMP-compliant facilities that meet or exceed U.S. Federal requirements.
  • Tested for identity, purity, and potency, ensuring you get exactly what’s on the label.
  • Third-party verified by Eurofins Scientific, a global leader in analytical testing and product certification, to confirm accuracy, safety, and compliance.
  • Free from banned substances and contaminants, with strict control for heavy metals, microbiological safety, and chemical residues.
  • Formulated with full label transparency, no proprietary blends, ever.

Innovation Meets Accountability

Our dual-facility model allows us to deliver the perfect balance between innovation and control. From classic protein powders to cutting-edge keto and gummy formulations, we maintain total oversight of every product’s journey  from concept to consumer.

Because at GSI, quality isn’t just a claim it’s a commitment we prove with every product we make.

Trusted. Tested. Built in the USA.