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                                             As filed pursuant to Rule 424(b)(3)
                                             under the Securities Act of 1933
                                             Registration No. 333-95649

PROSPECTUS SUPPLEMENT NO. 7 DATED JANUARY 19, 2001

TEKELEC
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$135,000,000
3.25% CONVERTIBLE SUBORDINATED DISCOUNT NOTES DUE 2004 AND
SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION THEREOF
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     The purpose of this supplement is to amend and supplement the prospectus
dated February 16, 2000, as amended and supplemented by:

     o  Supplement No. 1 dated March 15, 2000;
     o  Supplement No. 2 dated May 16, 2000;
     o  Supplement No. 3 dated July 10, 2000;
     o  Supplement No. 4 dated August 1, 2000;
     o  Supplement No. 5 dated August 8, 2000; and
     o  Supplement No. 6 dated August 25, 2000.

     The prospectus relates to the offer for resale of up to $135,000,000
aggregate principal amount at maturity of Tekelec's 3.25% Convertible
Subordinated Discount Notes due 2004, and such shares of common stock as may be
issued upon conversion of the notes.

     The prospectus is hereby further amended and supplemented to include in the
"Selling Securityholders" table the information in the table set forth below
regarding an additional selling securityholder. The following table is based
upon information provided to us by or on behalf of the selling securityholder
named below and indicates with respect to such selling securityholder:

     o the aggregate principal amount of the notes beneficially owned by such
       selling securityholder as of January 19, 2001;

     o the maximum amount of notes that such selling securityholder may offer
       under the prospectus;

     o the number of shares of Tekelec common stock beneficially owned by such
       selling securityholder as of January 19, 2001; and

     o the maximum number of shares of common stock that may be offered for
       the account of such selling securityholder (including its transferees,
       pledgees, donees or their successors) under the prospectus.




                                                                                                  NO. OF
                                                            AGGREGATE         PRINCIPAL          SHARES OF          NO. OF
                                                            PRINCIPAL           AMOUNT          COMMON STOCK       SHARES OF
                                                             AMOUNT            OF NOTES         OWNED PRIOR      COMMON STOCK
   NAME OF SELLING SECURITYHOLDER                           OF NOTES           OFFERED         TO OFFERING(1)      OFFERED(1)
   ------------------------------------------------      --------------      -----------       --------------    -------------
                                                                                                         
   Credit Suisse First Boston Corporation.............     $3,000,000        $3,000,000            169,017           169,017


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(1)  Reflects the shares of common stock into which the notes held by such
     securityholder and covered hereby are convertible at the initial conversion
     rate. The conversion rate and the number of shares of common stock issuable
     upon conversion of the notes and covered hereby are subject to adjustment
     under certain circumstances. See "Description of the Notes -- Conversion"
     in the prospectus.

     The selling securityholder named above may, in transactions exempt from the
registration requirements of the Securities Act of 1933, as amended, have sold,
transferred or otherwise disposed of all or a portion of its notes and common
stock since the date on which the securityholder provided the information in the
table regarding its notes and common stock. Any such sales would affect the data
in the above table.

THE DATE OF THIS PROSPECTUS SUPPLEMENT IS JANUARY 19, 2001.