April 19, 2021

Exhibit 10.15

April 19, 2021

Xx. Xxxx Xxxxx	REVISED
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Dear Xx. Xxxxx,

The undersigned parties to Promissory Note dated July 25, 2020 (the “Note”), by and between Xxxx Xxxxx (“Lender”), and Cingulate Therapeutics LLC (“Borrower”), for a total principle of $100,000.00, hereby mutually agree to amend said Note to change the Paid in Full date to “February 24, 2022”. All other terms of the Contract shall remain in full force and effect.

Xxxxxxxx agrees to pay penalties and interest that accrue until Xxxxxx’s balance is paid in full. If Xxxxxx receives a notice from the IRS regarding this debt, Xxxxxx must contact us immediately. Lender will use “best efforts to avoid penalties and interest.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first set forth above.

BORROWER			LENDER
Cingulate Therapeutics, LLC
By:	/s/Xxxxx X. Xxxxxxxxx, Esq.		By:	/s/ Xxxx Xxxxx
	Xxxxx X. Xxxxxxxxx			Xxxx Xxxxx
	General Counsel