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Capsule Manufacturers in Illinois

5 capsule manufacturers in Illinois have a GMP-certified facility (NSF/ANSI 455-2) or an Informed Manufacturer certified facility with capsules in its listed scope. Data checked against the public listings of NSF and Informed Manufacturer, most recently on November 1, 2026.

Looking for a capsule manufacturer in the USA? Compare the listings below for capsule manufacturing services and encapsulation. Use the country and state links to narrow your shortlist.

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All 5 manufacturers

Order: featured, then the rest; within each, own-brand makers last, then listings with a website, then A–Z.

  1. NSF lists a capsule facility in Lincolnshire, IL

    Lincolnshire, IL, United Statescarlsonlabs.com

    • Capsules
    • Gummies
    • Liquids
    • Oils
    • Powders
    • Softgels
    • +1 more
    Operations:
    • Liquid formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  2. NSF lists a capsule facility in Leonia, NJ

    Franklin Park, IL, United Statesvitalproteins.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  3. NSF lists a capsule facility in Spring Hill, TN

    Hanover Park, IL, United Statesprinovausa.com

    • Capsules
    • Liquids
    • Powders
    Operations:
    • Liquid formulation
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026
  4. NSF lists 4 capsule facilities, including one in Wood Dale, IL

    Wood Dale, IL, United Statesthermo-pak.com

    • Capsules
    • Softgels
    • Tablets
    NSF/ANSI 455-2checked Nov 1, 2026
  5. Makes its own brands; contract work not confirmed

    NSF lists a capsule facility in Sunrise, FL

    Downers Grove, IL, United Statesglanbia.com

    • Capsules
    • Powders
    • Tablets
    Operations:
    • Coating
    • Tablet compression
    • Encapsulation
    • Dry formulation
    NSF/ANSI 455-2checked Nov 1, 2026

View all 5 in the directory →

Compare capsule manufacturers at a glance in Illinois

  • Of the 5 capsule manufacturers in Illinois, the most common other dosage forms in listed scope are powders (4), tablets (4) and liquids (2).
  • 5 of the 5 capsule manufacturers in Illinois list a company website.
ManufacturerLocationDosage forms in listed scopeCertificationLast checked
J. R. Carlson Laboratories, Inc.Lincolnshire, ILCapsules, Gummies, Liquids, Oils, Powders, Softgels, +1 moreNSF/ANSI 455-2
Nestlé Healthcare Nutrition, Inc. DBA Vital ProteinsFranklin Park, ILCapsules, Powders, TabletsNSF/ANSI 455-2
Prinova Group, LLCHanover Park, ILCapsules, Liquids, PowdersNSF/ANSI 455-2
Thermo-Pak Co. Inc.Wood Dale, ILCapsules, Softgels, TabletsNSF/ANSI 455-2
Glanbia Performance Nutrition (Manufacturing), Inc.Downers Grove, ILCapsules, Powders, TabletsNSF/ANSI 455-2, Informed Manufacturer (not a GMP audit)
All 5 capsule manufacturers in Illinois, in the same order as the list above. Source: the public listings of NSF and Informed Manufacturer, last checked November 1, 2026. How we verify

Questions buyers ask

How do I choose a capsule manufacturer in the USA?

Start with the USA list, check the exact facility and its certificate scope, and confirm capsule manufacturing services and encapsulation. Ask for the minimum order, first-run and reorder lead times, testing plan and an itemized quote. Website capabilities are company claims unless a separate registry basis is shown; confirm the proposed work directly.

What should I ask a capsule manufacturer?

Ask which shell types and capsule sizes they run, whether your formula fits your target serving, and whether they bottle in-house. Shell options can include gelatin, HPMC (vegetarian), enteric or delayed-release; check how many capsules your serving needs, and whether they label as well as bottle. Ask about MOQ and lead time per SKU; both vary by manufacturer.

What does NSF/ANSI 455-2 certification mean?

NSF/ANSI 455-2 is a good manufacturing practice (GMP) audit standard for dietary supplements. It is built around the US FDA’s dietary supplement GMP rule (21 CFR Part 111) and adds retailer-driven requirements, so facilities are audited against one harmonised checklist. Certification applies to a specific facility and is listed publicly by the certifier.

What should I ask for in a quote request?

Ask for minimum order quantity, lead times, formulation options, testing and certificates of analysis, in writing. In detail: ask about minimum order quantity (MOQ) per SKU, lead time for a first run and for reorders, whether they offer stock formulas or custom formulation, who sources raw materials, what testing they run (identity, potency, microbiological, heavy metals) and whether you receive a certificate of analysis (COA) per batch, and whether they support the label claims you plan to make. Terms vary widely by manufacturer, so compare written answers rather than assumptions.

How do I verify a manufacturer’s GMP certification myself?

Ask the manufacturer for their current certificate and the exact facility address it covers, then look that facility up on the certifier’s public listing (for NSF/ANSI 455, NSF’s online listings). Certificates apply to specific sites, so make sure the facility that will make your product is the one listed. Each profile here links to the public listing we checked and the date we checked it.

How do I compare capsule manufacturers in Illinois?

Check the facility address and the scope shown on its registry record, then confirm that the proposed work will take place at that site in Illinois. Ask for a written quote with minimum order, testing, packaging, freight and lead times. A company address alone does not establish where your order will be made.