| Cover | Sep. 17, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 17, 2024 |
| Entity File Number | 001-12555 |
| Entity Registrant Name | Protagenic Therapeutics, Inc.\new |
| Entity Central Index Key | 0001022899 |
| Entity Tax Identification Number | 06-1390025 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 149 Fifth Avenue |
| Entity Address, Address Line Two | Suite 500 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10010 |
| City Area Code | 212 |
| Local Phone Number | 994-8200 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Protagenic Therapeutics, Inc. Common Stock | |
| Title of 12(b) Security | Protagenic Therapeutics, Inc. Common Stock |
| Trading Symbol | PTIX |
| Security Exchange Name | NASDAQ |
| Protagenic Therapeutics, Inc. Common Stock Warrants | |
| Title of 12(b) Security | Protagenic Therapeutics, Inc. Common Stock Warrants |
| Trading Symbol | PTIXW |
| Security Exchange Name | NASDAQ |
