Based on the available information, there is no explicit mention of any restrictions on stacking Vascepa coupons. However, it is always best to consult with a healthcare provider or pharmacist for the most accurate and up-to-date information.

The first source, a webpage from Drug Patent Watch, provides information on the patent status of Vascepa but does not mention any details about coupon restrictions.

The second source, a webpage from the Vascepa HCP website, provides resources for pharmacists, but there is no information about stacking Vascepa coupons.

The third source, a Reddit discussion on prescription medications, does not provide any specific information about Vascepa coupons or restrictions.

Therefore, while there is no clear indication of restrictions on stacking Vascepa coupons, it is important to consult with a healthcare provider or pharmacist for the most accurate information.

Sources:

1. <https://www.drugpatentwatch.com/p/tradename/VASCEPA>
2. <https://www.vascepahcp.com/resources/pharmacists/>
3. <https://www.reddit.com/r/steroids/comments/klj7h3/discussion_prescription_medshow_not_to_die_early/>