| Cover - USD ($) $ in Millions | 12 Months Ended | ||
| Dec. 31, 2023 | Apr. 25, 2024 | Jun. 30, 2023 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Amendment Flag | true | ||
| Amendment Description | Guardion Health Sciences, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-K/A to amend its Annual Report on Form 10-K for the fiscal year ended December 31, 2023, as filed with the Securities and Exchange Commission on March 29, 2024 (the “Original Filing”), to include the information required by Part III of Form 10-K. The Part III information was previously omitted from the Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above referenced items to be incorporated in the Form 10-K by reference from our definitive proxy statement if such statement is filed no later than 120 days after our fiscal year-end. This Amendment No. 1 is not intended to update any other information presented in the Original Filing. In addition, as required by Rule 12b-15 promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by our principal executive officer and principal financial officer are filed herewith as exhibits to this Amendment No.1. Because no financial statements have been included in this Amendment No. 1 and this Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Document Period End Date | Dec. 31, 2023 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2023 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity File Number | 001-38861 | ||
| Entity Registrant Name | GUARDION HEALTH SCIENCES, INC. | ||
| Entity Central Index Key | 0001642375 | ||
| Entity Tax Identification Number | 47-4428421 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Address, Address Line One | 2925 Richmond Avenue | ||
| Entity Address, Address Line Two | Suite 1200 | ||
| Entity Address, City or Town | Houston | ||
| Entity Address, State or Province | TX | ||
| Entity Address, Postal Zip Code | 77098 | ||
| City Area Code | 800 | ||
| Local Phone Number | 873-5141 | ||
| Title of 12(b) Security | Common Stock, par value $0.001 per share | ||
| Trading Symbol | GHSI | ||
| Security Exchange Name | NASDAQ | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | true | ||
| Elected Not To Use the Extended Transition Period | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 9.9 | ||
| Entity Common Stock, Shares Outstanding | 1,284,156 | ||
| Documents Incorporated by Reference [Text Block] | None | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Auditor Name | Weinberg & Company, P.A | ||
| Auditor Location | Los Angeles, California | ||
| Auditor Firm ID | 572 |
