Every dollar amount and date on this page is quoted from the official settlement document.
GSK BOOSTRIX False Advertising Class Action Settlement
Court case: DeCostanzo v. GlaxoSmithKline plc et al.
This settlement closed on June 8, 2026. It resolved a class action against GlaxoSmithKline (GSK) alleging that its 'Big Bad Cough' advertising campaign misled New York residents into getting the Boostrix vaccine primarily to protect others. Eligible claimants who filed in time received either $50 with vaccination proof or $10 without it.
Official eligibility wordingAdults who viewed the Big Bad Cough advertising campaign between 2015-2020, lived in New York or received vaccination there, and received Boostrix between May 20, 2016 and May 20, 2020 to protect someone else from pertussis. Checked against the official settlement source by SettleSignal on June 19, 2026.
Key facts
- Who may qualify New York residents who saw GSK's 'Big Bad Cough' advertising campaign between 2015 and 2020 and got the Boostrix vaccine between May 20, 2016 and May 20, 2020 believing it would protect someone else.
- Estimated payoutBoostrix vaccination during the class period; $10 without proof
- Claim deadlineJune 8, 2026 (closed)
- Proof requiredOptional
- What you needClaimants had to submit a claim form and could optionally provide proof of their Boostrix vaccination during the class period; filing with proof qualified for a higher payment.
- CourtUnited States District Court for the Eastern District of New York
Important dates
How hard is this claim to file?
What the form asks
- — Your legal name, mailing address, and contact information (Your personal records)
- — Check boxes confirming you saw the ad, received BOOSTRIX in New York, and received it to protect someone else (Your memory of the ad campaign and vaccination circumstances)
- — The approximate date you received the BOOSTRIX vaccine during the class period (Medical records, pharmacy receipts, insurance explanation-of-benefits, or personal calendar)
- — The city, state, or facility where you received the BOOSTRIX vaccine (Medical records or pharmacy receipts)
- — The name of the health care provider or pharmacy that gave you the vaccine (Medical records, vaccine card, or pharmacy receipt)
- — The name(s) of the person or people you were trying to protect from pertussis when you got vaccinated (Your personal recollection)
- — Choose one: Venmo, Zelle, virtual prepaid card, or paper check (Your preference)
- — Your signature (or electronic equivalent) and the date you are signing (Sign yourself)
Documents you'll need
Watch out for
- The claim deadline has passed — verify with the settlement administrator whether late claims are accepted
- Women who received BOOSTRIX while pregnant are excluded from the class and cannot claim
- You must have received BOOSTRIX specifically to protect one or more other individuals, not just for your own protection
- Without proof of vaccination you receive a lower payment; attach documentation if available to maximize your payout
- Proof documents must have been created before Feb. 10, 2025 to qualify
We prepare — you file on the official site yourself. This is not legal advice and is not an eligibility decision; the administrator and court decide.
Verify it yourself
How we verified this record
- Claim deadline
- Payout details
- Eligibility
- Proof requirement
- Administrator
- Court case
- Payment status
- 1 field queued for re-check
1 official source linked to this record.
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Claim deadline
June 8, 2026
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Eligibility summary Quoted in the official eligibility wording above ↑
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Proof requirement
Optional
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Payment status
Final approval pending
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Estimated payout
Boostrix vaccination during the class period; $10 without proof
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Administrator
Angeion Group
Show all 7 more verified fields
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Objection deadline
May 11, 2026
Class members may exclude themselves or object by May 11, 2026.
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Opt-out deadline
May 11, 2026
Class members may exclude themselves or object by May 11, 2026.
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Class period start
May 20, 2016
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Class period end
May 20, 2020
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Court
United States District Court for the Eastern District of New York
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Court case number
2:21-cv-04869-NJC-AYS
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Case name
DeCostanzo v. GlaxoSmithKline plc et al.
Where to act
