Quality assurance and regulatory excellence


We offer our private label and contract manufacturing partners worry-free processes and products. Because we understand the FDA and EPA regulations, Guy & O’Neill can ensure regulatory compliance and exceptional product quality every time. We’ve never had a market withdrawal and take pride in protecting our partners from regulatory concerns.

Our adult care, beauty, automotive, household and personal care products are safer and cleaner because they are made in a highly controlled environment by experienced personnel who also use the products.


  • All G&O facilities are EPA registered.
  • All G&O facilities are FDA registered for both OTC pharmaceuticals and medical devices
  • Digital quality check system
  • cGMP, current good manufacturing practices by FDA, for OTC and Medical Device (CFR 210-211, 820 Compliant Facilities)
  • G&O earned a 100/100 score during a third-party audit (the pharma average is 78/100)


“Guy & O’Neill’s quality audit scored in the top four of the many thousands of facilities I have audited over my 25-year career.”
— Quality auditor from a major cosmetics manufacturer

“G&O has consistently demonstrated their quality system excellence but has really stepped up their game in the last year.”
— Quality auditor

“Very clean, organized, great quality program and excellent people. Their lean activities are very noticeable, as they should be.”
— Quality auditor

Start manufacturing better, safer products with Guy & O’Neill!

Contact us today via the website or 262-692-2469.