Sonnet BioTherapeutics, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Notes Payable - Summary of Long-Term Debt and Notes Payable (Details) (Parenthetical)

Long-Term Debt and Notes Payable - Summary of Long-Term Debt and Notes Payable (Details) (Parenthetical) - USD ($)			3 Months Ended	12 Months Ended
	May 04, 2017	May 04, 2017	Mar. 31, 2018	Dec. 31, 2017	Feb. 22, 2018
Convertible secured debentures principal balance					$ 200,000
Debentures [Member]
Debt instruments bears interest rate	8.00%	8.00%
Note One [Member]
Debt instruments bears interest rate			5.50%	5.50%
Convertible secured debentures principal balance			$ 23,736	$ 23,736
Note payable maturity date			Sep. 10, 2018	Sep. 10, 2018
Debt periodic payment			$ 4,406	$ 4,406
Note Two [Member]
Debt instruments bears interest rate			5.25%	5.25%
Convertible secured debentures principal balance			$ 167,793	$ 167,793
Note payable maturity date			May 10, 2019	May 10, 2019
Debt periodic payment			$ 11,532	$ 11,532
Note Three [Member]
Debt instruments bears interest rate			5.25%	5.25%
Convertible secured debentures principal balance			$ 314,876	$ 314,876
Note payable maturity date			Aug. 10, 2021	Aug. 10, 2021
Debt periodic payment			$ 8,500	$ 8,500
Note [Member]
Convertible secured debentures principal balance			506,405	506,405
Debt periodic payment			$ 24,438	$ 24,438
Securities Purchase Agreement [Member]
Debt instruments bears interest rate	8.00%	8.00%
Convertible secured debentures principal balance	$ 6,000,000	$ 6,000,000
Number of warrant to purchase shares of common stock	1,200,000	1,200,000
Securities Purchase Agreement [Member] \| Warrants [Member]
Reverse stock split	one-for-ten reverse stock split
Note payable maturity date	Dec. 31, 2018
Sale of assets trigger percentage	33.00%
Demand repayment	108.00%
Warrant term	10 years
Securities Purchase Agreement [Member] \| Warrants One [Member]
Number of warrant to purchase shares of common stock	800,000	800,000
Aggregate purchase price	$ 6,500,000	$ 6,500,000
Warrant exercise price per share	$ 3.50	$ 3.50
Beneficial ownership limit, percentage		4.99%
Securities Purchase Agreement [Member] \| Warrants Two [Member]
Number of warrant to purchase shares of common stock	400,000	400,000
Beneficial ownership limit, percentage	19.99%