POWER OF ATTORNEY


	Know all by these presents, that the undersigned hereby authorizes Austin D.
Kim, Reena Desai or Martin Choy to execute for and on behalf of the undersigned,
in the undersigned's capacity as an officer of ACADIA Pharmaceuticals Inc. (the
"Company"), Forms 3, 4 and 5 and any Amendments thereto, and cause such form(s)
to be filed with the Securities and Exchange Commission pursuant to Section
16(a) of the Securities Exchange Act of 1934, relating to the undersigned's
beneficial ownership of securities in the Company.  The undersigned hereby
grants to 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 substitute or substitutes of such
attorney-in-fact, 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 attorney-in-fact, in serving in such capacity at
the request of the undersigned, is 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 attorney-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed this 9th day of November 2018.



							/s/ Eric Miller