| Cover | Oct. 08, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 08, 2024 |
| Entity Registrant Name | LIPOCINE INC. |
| Entity Central Index Key | 0001535955 |
| Entity Tax Identification Number | 99-0370688 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 675 Arapeen Drive |
| Entity Address, Address Line Two | Suite 202 |
| Entity Address, City or Town | Salt Lake City |
| Entity Address, State or Province | UT |
| Entity Address, Postal Zip Code | 84108 |
| City Area Code | (801) |
| Local Phone Number | 994-7383 |
| 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 $0.0001 per share |
| Trading Symbol | LPCN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
