The duration of the Vascepa coupon validity depends on the specific coupon program. The Vascepa website provides a savings card program that offers eligible patients a $9 co-pay for a 90-day prescription, which can be used for up to 12 months [2]. Additionally, there is a copay savings program that provides eligible patients with a maximum savings of $3,000 per year [3]. However, it is important to note that these programs may have specific eligibility requirements and restrictions, and patients should check with their healthcare provider or the program website for more information. According to Drug Patent Watch, the patent for Vascepa expired in 2020, so generic versions may be available [1].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://www.vascepa.com/getting-started/vascepa-savings/
[3] https://vascepa.copaysavingsprogram.com/