| Cover | Oct. 22, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 22, 2021 |
| Entity File Number | 001-38861 |
| Entity Registrant Name | GUARDION HEALTH SCIENCES, INC. |
| Entity Central Index Key | 0001642375 |
| Entity Tax Identification Number | 44-4428421 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | GHSI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
