Alza Corporation was an American pharmaceutical and medical systems company.

Alza was a major pioneer in the field of drug delivery systems, bringing over 20 prescription pharmaceutical products to market, and employing about 10,000 people during 20 years.

[3] The company owns the patents on the following delivery platforms: Alza built its first corporate headquarters in 1971, at 950 Page Mill Road in Palo Alto, California.

[8][9] The remaining employees were relocated to two buildings elsewhere in the Shoreline Business Park.

[10] They also previously operated a large-scale facility in Cashel, Ireland.