NASTECH PHARMACEUTICAL COMPANY INC.

LIMITED POWER OF ATTORNEY -
SECURITIES LAW COMPLIANCE

The undersigned, as an officer or director
of Nastech Pharmaceutical Company Inc. (the "Company"), hereby constitutes
and appoints Gregory L. Weaver, Chief Financial Officer, the undersigned's
true and lawful attorney-in-fact and agent to complete and execute such
Forms 144, Forms 3, 4 and 5 and other forms as such attorney shall in his
or her discretion determine to be required or advisable pursuant to Rule
144 promulgated under the Securities Act of 1933 (as amended), Section 16
of the Securities Exchange Act of 1934 (as amended) and the rules and
regulations promulgated thereunder, or any successor laws and regulations,
as a consequence of the undersigned's ownership, acquisition or disposition
of securities of the Company, and to do all acts necessary in order to file
such forms with the Securities and Exchange Commission, any securities
exchange or national association, the Company and such other person or
agency as the attorney shall deem appropriate.  The undersigned hereby
ratifies and confirms all that said attorneys-in-fact and agents shall do
or cause to be done by virtue hereof.

	This Limited 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 writing delivered to the foregoing
attorneys-in-fact.

	This Limited Power of Attorney is executed at New
York, NY, as of the date set forth below.


	/s/ Susan B. Bayh

	Signature

	Susan B. Bayh
	Type or Print Name

	Dated:  July
20, 2005

Witness:

/s/ Blake Hornick
Signature


Blake Hornick
Type or Print Name

Dated:  July 20, 2005