Exhibit 23.3
Phone +41 44 444 35 55 | BDO Ltd Schiffbaustrasse 2 8031 Zurich |
Consent of Independent Registered Public Accounting Firm
Addex Therapeutics Ltd
Geneva, Switzerland
We hereby consent to the incorporation by reference in the Prospectus constituting a part of this Post-Effective Amendment No. 3 to Registration Statement (Registration No. 333-271611) of our report dated April 18, 2024, relating to the consolidated financial statements of Addex Therapeutics Ltd appearing in the Company’s Annual Report on Form 20-F for the year ended December 31, 2023.
We also consent to the reference to us under the caption “Experts” in the Prospectus
Zürich, April 18, 2024
BDO AG
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/s/ Christoph Tschumi | /s/ Grégoire Weber |