CONTRACT MANUFACTURING
Best Formulations (Sirio Americas)
Best Formulations has manufactured dietary supplements and softgels from City of Industry, California since 1984. The company was acquired by Sirio Pharma in 2023 and now operates as Sirio Americas. This gives them access to a global network spanning Asia and Europe. Best Formulations is one of the largest plant-based softgel manufacturers in the United States. They specialize in difficult paste-style softgel formulas and probiotic handling. The company holds an FDA drug license, which is a higher regulatory standard than standard dietary supplement registration. Their four Southern California facilities total over 120,000 sq ft. They also report NPA GMP certification and NSF GMP for Sport designation, making them suitable for sports nutrition brands. The Sirio acquisition brings institutional-grade resources but may add corporate complexity for smaller brands.
City of Industry, California
Directory Listing · Certifications Confirmed
One or more certifications independently confirmed via public registries.
What this means →- MOQMOQ (Minimum Order Quantity)The smallest production run a manufacturer will accept for an order.
- Not publicly disclosed
- LEAD TIMELead TimeThe time from order placement to finished product delivery.
- Not publicly disclosed
§1Editorial assessment
Best Formulations has manufactured dietary supplements and softgels from City of Industry, California since 1984. The company was acquired by Sirio Pharma in 2023 and now operates as Sirio Americas. This gives them access to a global network spanning Asia and Europe. Best Formulations is one of the largest plant-based softgel manufacturers in the United States. They specialize in difficult paste-style softgel formulas and probiotic handling. The company holds an FDA drug license, which is a higher regulatory standard than standard dietary supplement registration. Their four Southern California facilities total over 120,000 sq ft. They also report NPA GMP certification and NSF GMP for Sport designation, making them suitable for sports nutrition brands. The Sirio acquisition brings institutional-grade resources but may add corporate complexity for smaller brands.
§2Six-gate readout
Six gates we apply before any name appears in the directory. Each gate is auto-derived from public evidence on this profile.
§3Inspection history
§4Certifications
1 of 5 certifications independently confirmed. What this means
§5Capability matrix
- PRODUCT TYPES
- Softgels · Tablets · Capsules · Powders · Gummies · Liquids
- CAPABILITIES
- Contract Manufacturing · Custom Formulation · Plant-Based Softgels · Probiotic Handling · R&D
- DOSAGE FORMS
- capsules · gummies · liquids · powders · softgels · tablets
§6Sources
- Best Formulations - Official Website(2026-03-12)
- NSF GMP for Sport Designation (New Hope)(2026-03-12)
- Sirio Pharma Acquisition (Nutritional Outlook)(2026-03-12)
- NSF International GMP Directory(2026-03-18)
Dietary supplement manufacturers must comply with 21 CFR Part 111 (Current Good Manufacturing Practice for dietary supplements). This includes requirements for personnel, facilities, equipment, production, laboratory operations, and record-keeping.
Disclosures
- No material connection exists between Inventory Ready and this manufacturer
- Best Formulations is a subsidiary of Sirio Pharma Co., Ltd. (publicly traded: 300791.SZ)
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