This communication is not a substitute for the preliminary proxy statements or any other proxy statement, registration statement, prospectus, tender or exchange offer document or other document Valeant, Pershing Square and/or Allergan may file with the SEC in connection with the proposed transaction. INVESTORS AND SECURITY HOLDERS OF VALEANT AND ALLERGAN ARE URGED TO READ THE PRELIMINARY PROXY STATEMENT AND ANY OTHER PROXY STATEMENT(s), REGISTRATION STATEMENT, PROSPECTUS, TENDER OR EXCHANGE OFFER DOCUMENTS AND OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE AS THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Any definitive proxy statement(s) or definitive tender or exchange offer documents (if and when available) will be mailed to stockholders of Allergan and/or Valeant, as applicable.