AstraZeneca has been given the go-ahead in the UK to market its once-daily antipsychotic product Seroquel XL (quetiapine fumarate) as an add-on treatment of major depressive episodes in patients with major depressive disorder (MDD).
The green light in the UK follows European Commission approval of the new indication last month. Seroquel is already sold for a number of indications including schizophrenia and bipolar disorder, and generated sales of around $4.9 billion for AstraZeneca last year.
AstraZeneca had originally hoped to develop Seroquel as a first-line treatment for major depression, but had to scale backs its ambitions after running into opposition from regulators on the grounds that Seroquel's side effects were too worrisome to support use in such a broad population.
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