Who makes Kirkland Signature LaxaClear (Polyethylene Glycol 3350), 100 Doses?
As of August 30, 2026, the manufacturer of Kirkland Signature LaxaClear (Polyethylene Glycol 3350), 100 Doses is Perrigo, per plant / registration code evidence.
The common claim
What most answers say — and what the evidence supports
Costco does not editorially disclose who makes Kirkland Signature LaxaClear, and most roundups note only that it is a store-brand equivalent of MiraLAX without naming a maker. The regulatory trail and Costco's own catalog data both point to Perrigo: the product's FDA label (NDC 63981-306) ties it to application ANDA 090685, whose holder of record in Drugs@FDA is PPI-DAC (Perrigo Pharma International DAC, a Perrigo Company plc subsidiary); Perrigo announced FDA approval of this over-the-counter polyethylene glycol 3350 store-brand product in 2009; and Costco's own product listing for the two-bottle 100-dose item independently carries "L Perrigo Company" in its manufacturer field. The two routes agree: Kirkland Signature LaxaClear is manufactured by Perrigo, per Costco's product-catalog manufacturer field (L. Perrigo Company) corroborated by FDA's Drugs@FDA record for ANDA 090685. The application holder is FDA's responsible party rather than necessarily the plant that fills each package, which is why the retailer's own field naming the same company is what closes the attribution.
Evidence & sources
Every source is graded on the six-tier rubric and archived, so the citation holds even if the original moves or paywalls. The tier badge grades the source; the status grades our confidence in the maker.
Tier 3
FDA structured product label for Kirkland Signature LaxaClear, NDC 63981-306, labeler Costco Wholesale Company (103391843), citing application 'ANDA090685'. Establishes the NDC-to-application link; the label lists only Costco as labeler/packager and names no separate manufacturing establishment.
Tier 3
Drugs@FDA application overview for ANDA 090685: 'Abbreviated New Drug Application (ANDA): 090685 Company: PPI-DAC'. PPI-DAC is the application holder of record, i.e. Perrigo Pharma International DAC, an Irish subsidiary of Perrigo Company plc. The NDC-to-application-to-sponsor join is indirect, and the application holder is FDA's responsible party rather than necessarily the plant that fills each package, so on its own this join would cap the attribution at probable; Costco's own catalog manufacturer field naming L. Perrigo Company for the same item (see the Costco Business Delivery source) is the independent corroboration that carries the record to confirmed (DECISIONS 2026-08-30). Drugs@FDA lists a Manufacturing (CMC) supplement (S-019) approved August 18, 2026; the sponsor is unchanged. A CMC supplement can be a manufacturing-site or process change and its content is not public, so the SPL is due a re-check for any new "Manufactured by" line.
Tier 4
Perrigo's own announcement, dated the ANDA 090685 approval date: Perrigo 'received final approval from the FDA for over-the-counter (OTC) Polyethylene Glycol 3350, Powder for Solution ... marketed under store brand labels and ... comparable to Schering-Plough HealthCare Products' MiraLAX(R).' Corroborates that Perrigo is the store-brand PEG 3350 applicant of record behind this application; it does not by itself name the plant that fills the Kirkland package.
Tier 4
Costco's Business Delivery storefront (costcobusinessdelivery.com) serves the same US catalog data as costco.com and, unlike costco.com, can be fetched and archived. Its page for this item - 'Kirkland Signature LaxaClear, 29.9 oz, 2 Bottles of 50 Doses' (item 100296329) - embeds catalog JSON whose manufacturer field reads mfName: "L PERRIGO COMPANY", L. Perrigo Company being Perrigo's principal US operating company (Allegan, MI). Read on August 30, 2026 and verified present in the Wayback snapshot created the same day. An internal catalog field rather than an editorial statement, and such fields can name a supplier-of-record rather than the plant; here it independently corroborates the FDA route (NDC 63981-306 -> ANDA 090685 -> holder PPI-DAC, Perrigo Pharma International DAC) - the retailer naming Perrigo's US operating company and the regulator naming its Irish application-holding affiliate, two entities of the same group - which satisfies the mfName-plus-independent-naming rule for confirmed (DECISIONS 2026-08-30). The application holder remains FDA's responsible party rather than a guaranteed physical packer; the retailer's own field agreeing with it is what closes the attribution.
Frequently asked
Who makes Kirkland Signature LaxaClear?
Is Kirkland LaxaClear the same as MiraLAX?
Has Kirkland LaxaClear ever been recalled?
As an Amazon Associate we earn from qualifying purchases. The link is affiliate-tagged and marked rel="sponsored"; this never affects an attribution or its grade.
Get notified when a Kirkland manufacturer changes
Suppliers switch quietly and most sites never notice. We track the changes and log the day a maker moves — the same tracking that powers the change log.
Change-log newsletter · no spam · unsubscribe anytime.