Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Post-Effective Amendment No. 2 to the Registration Statement on Form F-1 of NLS Pharmaceutics Ltd. of our report dated May 14, 2021 relating to the financial statements, which appears in NLS Pharmaceutics Ltd.’s Annual Report on Form 20-F for the year ended December 31, 2020. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers AG
 

Zurich, Switzerland
 

May 27, 2021