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Note 1 - Business	9 Months Ended
	Sep. 30, 2016
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	1.     Business Overview Heron Therapeutics, Inc. is a biotechnology company focused on improving the lives of patients by developing best-in-class medicines that address major unmet medical needs. We are developing novel, patient-focused solutions that apply our innovative science and technologies to already-approved pharmacological agents. On August 9, 2016, our first commercial product, SUSTOL® (granisetron) extended-release injection (“SUSTOL”) was approved by the U.S. Food and Drug Administration (“FDA”). SUSTOL is indicated, in combination with other antiemetics, in adults for the prevention of acute and delayed nausea and vomiting associated with initial and repeat courses of moderately emetogenic chemotherapy or anthracycline and cyclophosphamide combination chemotherapy regimens. We commenced commercial sales of SUSTOL in October 2016. We are developing two pharmaceutical products for patients suffering from cancer or pain. HTX-019, an intravenous formulation of the neurokinin-1 receptor antagonist aprepitant, is being developed for the prevention of chemotherapy-induced nausea and vomiting as an adjunct to other antiemetic agents. HTX-011, a long-acting formulation of the local anesthetic bupivacaine in a fixed-dose combination with the anti-inflammatory meloxicam, is being developed for the prevention of post-operative pain. Liquidity As of September 30, 2016, we had approximately $88.9 million in cash, cash equivalents and short-term investments. We have incurred significant operating losses and negative cash flows from operations; our accumulated deficit was $538.0 million.

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