Who makes Kirkland Signature Aller-Flo (Fluticasone Propionate 50 mcg Nasal Spray)?
As of August 30, 2026, evidence points to Perrigo as the manufacturer of Kirkland Signature Aller-Flo (Fluticasone Propionate 50 mcg Nasal Spray), but no tier 1–3 source names the link directly.
The common claim
What most answers say — and what the evidence supports
Store-brand roundups pitch Kirkland Aller-Flo as Costco's generic Flonase, and where they name a maker they generally point to Perrigo, the largest US private-label OTC drugmaker. FDA drug records and trade reporting line up with that, though through more than one company. The Kirkland Aller-Flo carton reproduced on its FDA label reads "Distributed By Perrigo, Allegan, MI"; Perrigo's own catalog lists a matching fluticasone propionate 50 mcg store-brand "Allergy Relief Nasal Spray" compared to Flonase; and a 2017 trade release describes Perrigo as licensed to make the store-brand versions of the fluticasone nasal spray whose FDA application (ANDA 207957) is held by West-Ward Pharmaceuticals, a Hikma subsidiary. Every signal is indirect - "Distributed By" is distribution language, the ANDA holder (Hikma/West-Ward) is a different company than the licensed store-brand maker, and this one application covers roughly 30 different store brands - so the evidence points to Perrigo without rising to a flat confirmation.
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
DailyMed's FDA-sourced label "KIRKLAND SIGNATURE ALLER FLO- fluticasone propionate spray, metered" (SPL version 8, effective 2026-01-06) names Costco Wholesale Company as labeler, lists NDC 63981-001, and in Marketing Information gives Marketing Category "Abbreviated New Drug Application" with Application Number ANDA207957 - the brand-to-ANDA anchor. Beyond the Costco labeler line, the carton text reproduced on the SPL reads "Distributed By Perrigo, Allegan, MI" - an on-carton naming of Perrigo for this specific Kirkland product. "Distributed By" is distribution language rather than an outright "manufactured by" line, so this corroborates Perrigo without resolving the physical plant; the deterministic route to FDA's responsible party runs through the ANDA number (resolved in the Drugs@FDA source below to Hikma/West-Ward, which licensed store-brand production to Perrigo - see the trade-press source).
Tier 3
Drugs@FDA resolves ANDA207957 - the application behind Kirkland Signature Aller Flo (NDC 63981-001) - to sponsor HIKMA (formerly West-Ward Pharmaceuticals, a Hikma subsidiary). The openFDA record lists roughly 30 store brand_names sharing this one ANDA (KIRKLAND SIGNATURE ALLER FLO alongside EQUATE / Walmart, UP AND UP / Target, CVS, AMAZON BASIC CARE, LEADER, RUGBY, WELBY / Aldi, TOPCARE and others), and its NDC manufacturer_name field only echoes the several store labelers (Costco, Walmart, Aldi, Amazon, CVS, L. Perrigo Company, Rugby, etc.), not the physical maker. Graded probable, not confirmed: the ANDA holder is FDA's responsible party but not necessarily the physical packer, this application is heavily multi-sourced across labelers, and the maker of the Kirkland store-brand version is reached indirectly - Hikma/West-Ward holds the ANDA and licensed store-brand production to Perrigo (trade-press source), whose name is the one printed on the Kirkland carton (DailyMed source above).
Tier 4
Trade-press release describing the ownership of ANDA 207957 - the OTC fluticasone propionate nasal spray application that Kirkland Aller Flo is marketed under. Verbatim: "West-Ward Pharmaceuticals International, a wholly-owned subsidiary of Hikma Pharmaceuticals PLC"; the product launches "under West-Ward's recently approved ANDA application No. 207957"; and "West-Ward previously granted license to Perrigo for brand stores only. In other words, Perrigo can make the product for a chain such as Walgreens (for example) to sell as a Walgreens brand, but Perrigo cannot create a separate brand to be sold everywhere." This is the source that reconciles the two FDA records: Hikma/West-Ward holds the ANDA, while Perrigo is the licensed maker of the store-brand versions (of which Kirkland Aller-Flo is one). It is a promotional release from a competitor (Innovus), cited only for the licensing structure it states, which the on-carton "Distributed By Perrigo" line independently corroborates.
Tier 4
Perrigo's own product catalog lists an "Allergy Relief Nasal Spray" with active ingredient "Fluticasone Propionate (Glucocorticoid), 50 mcg Per Spray" and "Compare to: Flonase Allergy Relief active ingredient" - documenting that Perrigo carries a store-brand fluticasone propionate 50 mcg nasal spray in exactly the product class of Kirkland Aller-Flo. Corroborates that Perrigo sits in this store-brand supply lane; it is a Perrigo catalog listing, not a Costco-specific naming of the Kirkland product.
Frequently asked
Who makes Kirkland Aller-Flo for Costco?
Is Kirkland Aller-Flo the same as Flonase?
Has Kirkland Aller-Flo ever been recalled?
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