About Us

Best Formulations LLC., a diversified nutraceutical company headquartered in City of Industry, California, is a contract manufacturer and private labeler of thousands of branded, high quality nutritional supplements including softgels, tablets, capsules, powders, and teas.

Our state-of-the-art 225,000 square foot manufacturing facility and full in-house laboratory is GMP certified by the NPA (Natural Products Association) and NSF.

When health is at stake, there can be no compromise. We understand that your valued customers - who trust your products - expect only the best. To retain and grow your customer base, you must affiliate yourself with a company that meets your requirement and exceeds your expectations.

As a valued strategic partner, Best Formulations offers a comprehensive program of services, turnkey solutions, and client support that is unmatched in the industry. Our product development team can provide customized, proprietary formulations designed specifically to meet the needs of our customers and their method of distribution. Our vertically integrated manufacturing and packaging process allows us to schedule flexible production runs to respond quickly to shifting market demands. Every step of the way, we are committed to your growth and success!


Sirio is the leading integrated contract manufacturer for the dietary supplement industry. The company has global operations, with development and manufacturing capabilities spanning all dosage forms - including softgel, nutraceutical gummy, veggiesoft®, probiotic, tablet, powder, capsule and functional beverage.


Founded in 1992, Sirio Europe is one of the Top-5 softgel manufacturers in Europe.