CHSN 6-K/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K/A

REPORT OF FOREIGN PRIVATE ISSUERPURSUANT TO RULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2026

Commission File Number: 001-41663

Chanson International Holding

B9 Xinjiang Chuangbo Zhigu Industrial Park

No. 100 Guangyuan Road, Shuimogou District

Urumqi, Xinjiang, China

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒          Form 40-F ☐

Explanatory Notes

This Amendment No. 1 (this “Amendment”) is made to Report on Form 6-K originally furnished to the Securities and Exchange Commission on March 16, 2026 (the “Original 6-K”) to amend the Original 6-K to include the following incorporation by reference language in the Original 6-K:

“The contents of this Report on Form 6-K are herebyincorporated by reference into (i) the Company’s registration statement on Form S-8 (File No. 333-288739) filed with the SEC onJuly 18, 2025 and (ii) the Company’s registration statement on Form F-3 (File No. 333-289600) that was initially filed with theSEC on August 14, 2025 and declared effective by the SEC on September 30, 2025.”

No other changes have been made to the Original 6-K. This Amendment does not reflect events that may have occurred subsequent to the original submission date and does not modify or update in any way the disclosures made in the Original 6-K.

Incorporation by Reference

The contents of this Amendment are hereby incorporated by reference into (i) the Company’s registration statement on Form S-8 (File No. 333-288739) filed with the SEC on July 18, 2025 and (ii) the Company’s registration statement on Form F-3 (File No. 333-289600) that was initially filed with the SEC on August 14, 2025 and declared effective by the SEC on September 30, 2025.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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