Exhibit 99.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Bio-Technology General Corp. (the “Company”) on Form 10-K for the year ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Sim Fass, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)           The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)           The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Sim Fass
	Sim Fass
	Chief Executive Officer
	March 31, 2003

A signed original of this written statement required by Section 906 has been provided to Bio-Technology General Corp. and will be retained by Bio-Technology General Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Bio-Technology General Corp. (the “Company”) on Form 10-K for the year ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Whitney K. Stearns, Jr., Senior Vice President—Chief Financial Officer and Treasurer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)           The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)           The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Whitney K. Stearns, Jr.
	Whitney K. Stearns, Jr.
	Senior Vice President—Chief Financial Officer and Treasurer
	March 31, 2003

A signed original of this written statement required by Section 906 has been provided to Bio-Technology General Corp. and will be retained by Bio-Technology General Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

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CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Bio-Technology General Corp. (the “Company”) on Form 10-K for the year ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Yehuda Sternlicht, Vice President—Chief Accounting Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)           The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)           The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ Yehuda Sternlicht
	Yehuda Sternlicht
	Vice President—Chief Accounting Officer
	March 31, 2003

A signed original of this written statement required by Section 906 has been provided to Bio-Technology General Corp. and will be retained by Bio-Technology General Corp. and furnished to the Securities and Exchange Commission or its staff upon request.

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