Perrigo is the documented supplier behind Kirkland Signature ProCare infant formula; Costco owns the Kirkland Signature label. The factory for an individual tub is not identified in these sources. [2][1]
Who makes Kirkland Formula?
- Owner
- Kirkland Signature is Costco Wholesale’s private label. Perrigo’s product page identifies ProCare in its own formula range, separating Costco’s brand ownership from the supplier business. [1][2]
- Made by
- Perrigo markets Kirkland Signature ProCare through its pediatrics business. Its 2025 filing describes the company’s infant-formula production and a strategic review announced in November 2025. A strategic review does not itself prove a completed sale. [2][3]
- Made in
- Perrigo’s filing discusses its US infant-formula manufacturing network, including its Wisconsin facility. It does not assign a particular Kirkland ProCare lot to that plant; the exact plant for a current tub is Unconfirmed. [3]
Last checked · 3 sources · English source review
Kirkland Formula supply chain map
Select a node to inspect its role and evidence. Arrows show ownership or manufacturing relationships, not shipment volumes.
Brand
→ Owner
→ Manufacturer
→ Factory
Perrigo is the documented supplier behind Kirkland Signature ProCare infant formula; Costco owns the Kirkland Signature label. The factory for an individual tub is not identified in these sources.
Text version of the map
- Kirkland Formula (Brand): Perrigo is the documented supplier behind Kirkland Signature ProCare infant formula; Costco owns the Kirkland Signature label. The factory for an individual tub is not identified in these sources. [2][1]
- Kirkland Formula → Costco Wholesale (Owner): Kirkland Signature is Costco Wholesale’s private label. Perrigo’s product page identifies ProCare in its own formula range, separating Costco’s brand ownership from the supplier business. [1][2]
- Costco Wholesale → Manufacturing and sourcing (Manufacturer): Perrigo markets Kirkland Signature ProCare through its pediatrics business. Its 2025 filing describes the company’s infant-formula production and a strategic review announced in November 2025. A strategic review does not itself prove a completed sale. [2][3]
- Manufacturing and sourcing → Selected production evidence (Factory): Perrigo’s filing discusses its US infant-formula manufacturing network, including its Wisconsin facility. It does not assign a particular Kirkland ProCare lot to that plant; the exact plant for a current tub is Unconfirmed. [3]
Who owns Kirkland Formula?
Kirkland Signature is Costco Wholesale’s private label. Perrigo’s product page identifies ProCare in its own formula range, separating Costco’s brand ownership from the supplier business. [1][2]
Ownership guides: Costco Hot DogsKirkland BatteriesKirkland BourbonKirkland cat foodKirkland CoffeeKirkland DiapersKirkland Dog FoodKirkland Golf BallsKirkland Olive OilKirkland paper towelsKirkland Protein BarsKirkland TequilaKirkland Toilet PaperKirkland VodkaKirkland waterKirkland whiskeyKirkland WineKirkland Signature
Who actually makes Kirkland Formula products?
Perrigo markets Kirkland Signature ProCare through its pediatrics business. Its 2025 filing describes the company’s infant-formula production and a strategic review announced in November 2025. A strategic review does not itself prove a completed sale. [2][3]
Where are Kirkland Formula products made?
Perrigo’s filing discusses its US infant-formula manufacturing network, including its Wisconsin facility. It does not assign a particular Kirkland ProCare lot to that plant; the exact plant for a current tub is Unconfirmed. [3]
Is Kirkland Formula made in China or the USA?
US manufacturing exists within Perrigo’s formula business. The reviewed product page does not give a lot-specific factory or justify a universal country claim for all Kirkland formula, including products sold in other countries. [3][2]
Same factory, different label
Costco’s ownership of multiple Kirkland products does not establish one common factory. Perrigo’s role in ProCare does not identify the manufacturers of Kirkland diapers, coffee or other foods, or prove two formulas are interchangeable. [2][1]
Compare the sourced ownership and manufacturing guides: Kirkland SignatureKirkland DiapersKirkland Dog FoodKirkland CoffeeCostco Hearing AidsKirkland BatteriesKirkland BourbonKirkland Golf BallsKirkland Toilet PaperKirkland cat foodKirkland TequilaKirkland waterKirkland whiskeyKirkland paper towelsKirkland VodkaKirkland WineCostco Hot DogsKirkland Olive OilKirkland Protein Bars
Ownership timeline
Frequently asked questions
4 questions about this supply chain, answered from the records above.
Who makes kirkland formula?
Perrigo markets Kirkland Signature ProCare through its pediatrics business. Its 2025 filing describes the company’s infant-formula production and a strategic review announced in November 2025. A strategic review does not itself prove a completed sale.[2][3]
Who owns kirkland?
Kirkland Signature is Costco Wholesale’s private label. Perrigo’s product page identifies ProCare in its own formula range, separating Costco’s brand ownership from the supplier business.[1][2]
Sources and scope
Year-only source dates denote the report’s coverage year. Dated disclosures establish the facts described at that time. Plant output, contracts and ownership can change; this is a selected map, not a complete supplier census.
- [1] Costco annual report 2025 — 2025 · Primary source · Reviewed 2026-10-21.
Identifies Kirkland Signature as Costco’s private label and its 30-year trademark anniversary.
- [2] Perrigo: Kirkland Signature ProCare — 2025 · Primary source · Reviewed 2026-10-21.
Identifies Kirkland ProCare in Perrigo’s product range; notes 2025 MSRP and November 2025 comparison data.
- [3] Perrigo annual report 2025 — 2025 · Primary source · Reviewed 2026-10-21.
Documents infant formula manufacturing, facilities and the 2025 strategic review; not a lot-to-factory assignment.
Unconfirmed
- Factory and country for every current lot and international version; a completed post-review business sale; no formula-equivalence or feeding advice is inferred.