Exhibit 23


INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in Registration
Statements No. 2-83963, No. 33-19013, No. 33-50606, No. 333-30331
and No.333-87077 on Form S-8, Registration Statement No. 333-853
on Form S-3, Post Effective Amendment No. 1 to Registration
Statement No. 2-84723 on Form S-8, Post Effective Amendment No. 1
to Registration Statement No. 2-80012 on Form S-3, Post Effective
Amendment No. 1 to Registration Statement No. 2-77740 on Form S-3
and Registration Statements No. 333-12909 and No. 333-30355 on
Form S-3 of our reports dated February 11, 2000, appearing in and
incorporated by reference in the Annual Report on Form 10-K of
Schering-Plough Corporation for the year ended December 31, 1999.


/s/ DELOITTE & TOUCHE, LLP

Parsippany, New Jersey
March 2, 2000