According to the sources provided, there is currently no information available on any discounts or coupons for Lurbinectedin. Drugpatentwatch.com [1] provides information on the patent status of Lurbinectedin but does not mention any discounts. The Pharma Letter [2] reports on the deal worth up to $1 billion for Lurbinectedin in the USA but does not mention any discounts. Drugs.com [3] provides pricing information for Lurbinectedin, but there is no mention of any discounts or coupons. It is recommended to consult with a healthcare provider or a pharmacist to inquire about any available discounts or assistance programs for Lurbinectedin.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LURBINECTEDIN
[2] https://www.thepharmaletter.com/article/pharmamar-inks-deal-worth-up-to-1-billion-for-lurbinectedin-in-the-usa
[3] https://www.drugs.com/price-guide/zepzelca