| Document And Entity Information | 3 Months Ended |
| Mar. 31, 2022 | |
| Document Information Line Items | |
| Entity Registrant Name | INMED PHARMACEUTICALS INC. |
| Document Type | S-1/A |
| Amendment Flag | true |
| Amendment Description | AMENDMENT NO. 1 |
| Entity Central Index Key | 0001728328 |
| Entity Filer Category | Non-accelerated Filer |
| Entity Small Business | true |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | A1 |
