POWER OF ATTORNEY

      	Know all by these presents, that the undersigned hereby
constitutes and appoints each of Vlad Coric, James Engelhart and
Douglas Gray, or either of them signing singly, and with full power of
substitution, the undersigned's true and lawful attorney-in-fact 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") any 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 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 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, 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, 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 Biohaven Pharmaceutical Holding Company Ltd.,
unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

      	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 13th day of August, 2021.

/s/ George C. Clark
Signature
George C. Clark
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