EXHIBIT 23
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                        CONSENT OF INDEPENDENT ACCOUNTANT




         We  consent  to the  incorporation  by  reference  in the  registration
statements of Interneuron Pharmaceuticals, Inc. on Form S-8 (File Nos. 33-58742,
33-76652,  33-94730  and  33-94736)  and on Form  S-3  (33-75826,  33-32408  and
333-1273)  of  our  report  dated  November  13,  1996  on  our  audits  of  the
consolidated  financial  statement of  Interneuron  Pharmaceuticals,  Inc. as of
September  30, 1995 and 1996 and for each of the three years in the period ended
September 30, 1996,  which report is included in the Annual Report on Form 10- K
of  Interneuron  Pharmaceuticals,  Inc. for the fiscal year ended  September 30,
1996.





                                                   /s/ Coopers & Lybrand L.L.P.
                                                   ----------------------------
                                                   Coopers & Lybrand L.L.P.

Boston, Massachusetts
December 16, 1996