Alexza Pharmaceuticals Announces European Launch of ADASUVE® (Staccato® Loxapine)

   Alexza Pharmaceuticals Announces European Launch of ADASUVE® (Staccato®
                                  Loxapine)

Alexza's Partner Ferrer Records First Product Sales in Germany

PR Newswire

MOUNTAIN VIEW, Calif., July 30, 2013

MOUNTAIN VIEW, Calif., July 30, 2013 /PRNewswire/ --Alexza Pharmaceuticals,
Inc. (Nasdaq: ALXA) today announced that the company's commercial partner
Grupo Ferrer Internacional, S.A. has initiated sales of ADASUVE^® inhalation
powder, pre-dispensed (Staccato^® Loxapine) in the European Union ("EU").
ADASUVE is now available in Germany. The first sale and shipment of product
by Ferrer triggers a $1.25 million milestone payment to Alexza, pursuant to
the Company's collaboration agreement with Ferrer.

"This launch represents the first commercial sale of ADASUVE in the world, and
marks the culmination of many years of dedicated effort and rigorous clinical
development. I am incredibly proud of the efforts by the Alexza team and our
partner Ferrer in bringing ADASUVE to physicians in the EU for use in their
treatment of agitated patients with schizophrenia or bipolar disorder," said
Thomas B. King, President and CEO of Alexza. "The initial launch of ADASUVE
in Germany, followed by Ferrer's planned commercial roll out across the EU, is
a key milestone for Alexza."

Alexza received marketing authorization for ADASUVE from the European
Commission in February 2013. ADASUVE is the first inhalation therapy for the
rapid control of mild-to-moderate agitation in adult patients with
schizophrenia or bipolar disorder authorized to be placed on the market in the
EU. The marketing authorization for ADASUVE requires that patients receive
regular treatment immediately after administration of the product to control
acute agitation symptoms. It also requires that ADASUVE be administered only
in a hospital setting under the supervision of a healthcare professional.
Short-acting beta-agonist bronchodilator treatment should also be available
for treatment of possible severe respiratory side-effects, such as
bronchospasm.

"Alexza and Ferrer's effective cooperation has enabled a product launch of
ADASUVE in an admirably short time following the EU approval in February
2013," said Antoni Villaro, Chief Operating Officer of Ferrer. "ADASUVE is an
important strategic product for Ferrer and we are excited to be introducing
ADASUVE to the EU psychiatric and hospital treatment community."

Under the terms of the collaboration agreement between Alexza and Ferrer,
which was announced in October 2011, Alexza is the exclusive supplier of
ADASUVE, responsible for all aspects of manufacture of the product. Alexza
began manufacturing launch quantities of the product for the EU in the second
quarter of 2013 at its Mountain View, California facility. The commercial
product was shipped to Ferrer in June 2013, and Ferrer completed EU product
quality control release and final packaging in preparation for the planned
third quarter launch. Ferrer is expected to launch ADASUVE in additional EU
countries before year-end and will continue the EU launch into 2014.

Alexza and Ferrer estimate that as many as 8 million adults in the EU alone
suffer from schizophrenia or bipolar disorder^1. Agitation is a common
symptom for these patients^2, characterized by feelings of distress, anxiety
and loss of control.

About ADASUVE (Staccato loxapine)
ADASUVE combines Alexza's proprietary Staccato system with loxapine, an
antipsychotic medicinal product. The Staccato system is a hand-held inhaler
that delivers a drug aerosol to the deep lung that results in intravenous-like
pharmacokinetics and rapid systemic effects.

ADASUVE has been approved for marketing in the United States by the U.S. Food
and Drug Administration and in the EU by the European Commission. The
authorization for ADASUVE in the EU differs from that in the U.S., with
respect to the indication statement, dose regimen, available dose strengths,
and risk mitigation and management plans.

For more information about ADASUVE, including the Summary of Product
Characteristics and Patient Information Leaflet approved in the EU please
visit: http://www.adasuve.com/index-eu.php. For the full prescribing
information including boxed warnings for the U.S., please visit
www.adasuve.com.

About Ferrer
Founded in 1959, Ferrer is a privately-held European R&D-based pharmaceutical
company headquartered in Barcelona. It is active in the pharmaceutical,
health, fine chemicals and food sectors in Europe, Latin America, Africa, the
Middle East, Asia and the United States. In total, Ferrer's human healthcare
products are commercialized in more than 90 countries, through 27
international affiliates (including joint ventures) and 70 partners and
distributors.

Ferrer carries out activities throughout the full pharmaceutical value chain,
from R&D to international marketing, including fine chemical development and
the manufacturing of both raw materials and finished pharmaceuticals. Its
research centers in Spain and Germany, and manufacturing sites in Europe and
Latin America cover the pharmaceutical, diagnostics, vaccine, fine chemical,
food and feed sectors.

Ferrer is Alexza's commercial partner for ADASUVE in Europe, Latin America,
Russia and the Commonwealth of Independent States countries.

For more information, visit www.ferrergrupo.com

About Alexza Pharmaceuticals, Inc.
Alexza Pharmaceuticals is focused on the research, development and
commercialization of novel, proprietary products for the acute treatment of
central nervous system conditions. Alexza's products are based on the
Staccato system, a hand-held inhaler designed to deliver a drug aerosol to the
deep lung, providing rapid systemic delivery and therapeutic onset, in a
simple, non-invasive manner.

ADASUVE (Staccato loxapine) is Alexza's first commercial product, which was
approved by the U.S. Food and Drug Administration in December 2012 and by the
European Commission in February 2013. Teva Pharmaceutical USA, Inc. is
Alexza's commercial partner for ADASUVE in the U.S. Grupo Ferrer
Internacional, S.A. is Alexza's commercial partner for ADASUVE in Europe,
Latin America, Russia and the Commonwealth of Independent States countries.

ADASUVE^® and Staccato^® are registered trademarks of Alexza Pharmaceuticals,
Inc.

Safe Harbor Statement
This news release contains forward-looking statements that involve significant
risks and uncertainties. Any statement describing the Company's expectations
or beliefs is a forward-looking statement, as defined in the Private
Securities Litigation Reform Act of 1995, and should be considered an at-risk
statement. Such statements are subject to certain risks and uncertainties,
particularly those inherent in the process of developing and commercializing
drugs, including the ability of Alexza and our partners, Teva and Ferrer, to
effectively and profitably commercialize ADASUVE, estimated product revenues
and royalties associated with the sale of ADASUVE, the adequacy of the
Company's capital to support the Company's operations, and the Company's
ability to raise additional funds and the potential terms of such potential
financings. The Company's forward-looking statements also involve assumptions
that, if they prove incorrect, would cause its results to differ materially
from those expressed or implied by such forward-looking statements. These and
other risks concerning Alexza's business are described in additional detail in
the Company's Annual Report on Form 10-K for the year ended December 31, 2012
and the Company's other Periodic and Current Reports filed with the Securities
and Exchange Commission. Forward-looking statements contained in this
announcement are made as of this date, and the Company undertakes no
obligation to publicly update any forward-looking statement, whether as a
result of new information, future events or otherwise.

References:

1.Wittchen H.U., et al., 2011. The size and burden of mental disorders and
    other disorders of the brain in Europe 2010. Eur. Neuropsychopharmacol.
    21, 655-679.
2.Alexza data on file (primary market research among caregivers of patients
    with schizophrenia (95% have agitation) and bipolar patients (87% have
    agitation)).

SOURCE Alexza Pharmaceuticals, Inc.

Website: http://www.alexza.com
Website: http://www.adasuve.com
Website: http://www.ferrergrupo.com
Contact: BCC Partners, Karen L. Bergman, 650.575.1509,
kbergman@bccpartners.com, or Michelle Corral, or 415.794.8662,
mcorral@bccpartners.com