Exhibit 24 LANTHEUS HOLDINGS, INC. POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints Eric Green, Assistant Secretary of Lantheus Holdings, Inc. (the "Company"), and each of the Chief Executive Officer, President, Treasurer, each Assistant Treasurer, Secretary and each Assistant Secretary of the Company, each acting singly or together and with full power of substitution, as the undersigned's true and lawful attorney-in-fact with full power and authority to act in the name of and for and on behalf of the undersigned to: 	(1)	prepare, execute in the undersigned's name and on the 		undersigned's behalf, and submit to the U.S. Securities 		and Exchange Commission (the "SEC") a Form ID, including 		amendments thereto, and any other documents necessary 		or appropriate to obtain codes and passwords enabling the 		undersigned to make electronic filings with the SEC of 		reports required by Section 16(a) of the Securities 		Exchange Act of 1934 or any rule or regulation of the SEC; 	(2)	execute for and on behalf of the undersigned, in the 		undersigned's capacity as an officer and/or director of 		Company, Forms 3, 4 and 5 in accordance with Section 16(a) 		of the Securities Exchange Act of 1934 and the rules 		thereunder; 	(3)	do and perform any and all acts for and on behalf of the 		undersigned which may be necessary or desirable to obtain 		and maintain the undersigned's filings codes, complete 		and execute any such Form 3, 4 or 5, complete and execute 		any amendment or amendments thereto, and timely file such 		form with the SEC and any stock exchange or similar 		authority; and 	(4)	take any other action of any type whatsoever in connection 		with the foregoing which, in the opinion of such 		attorney-in-fact, may be of benefit to, in the best 		interest of, or legally required by or of, the undersigned, 		it being understood that the documents executed by such 		attorney-in-fact on behalf of the undersigned pursuant to 		this Power of Attorney shall be in such form and shall 		contain such terms and conditions as such 		attorney-in-fact may approve in such attorney-in-fact's 		discretion. The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934. This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of, and transactions in, securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact. [The remainder of this page is left blank intentionally.] IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of the date written below. /s/ Julie Eastland Signature Julie Eastland Print Name 9/03/2024 Date