Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of First Wave BioPharma, Inc. (the “Company”) on Form 10-K for the fiscal year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James Sapirstein, Chief Executive Officer of the Company, and Sarah Romano, Chief Financial Officer of the Company, each certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 29, 2024	/s/ James Sapirstein
	James Sapirstein
	Chief Executive Officer
	(Principal Executive Officer)
	/s/ Sarah Romano
	Sarah Romano
	Chief Financial Officer
	(Principal Financial and Accounting Officer)