EX-32.1 3 prph-2025930xexx321.htm EX-32.1
EXHIBIT 32.1
PROPHASE LABS, INC.
CERTIFICATION
PURSUANT TO RULE 13a-14(b) OF THE SECURITIES EXCHANGE ACT OF 1934
AND 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
I, Ted Karkus, Chief Executive Officer of ProPhase Labs, Inc., a Delaware corporation (the “Registrant”), in connection with the Registrant’s Quarterly Report on Form 10-Q for the period ended September 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), do hereby represent, warrant and certify, in compliance with Rule 13a-14(b) of the Securities Exchange Act of 1934 and 18 U.S.C Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:
(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

| /s/ Ted Karkus
| Ted Karkus
| Chairman of the Board and Chief Executive Officer (Principal Executive Officer and Principal Financial Officer)
| Date: November 19, 2025