Vascepa (icosapent ethyl) is a prescription medication used to treat high levels of triglycerides in the blood. It is a purified form of eicosapentaenoic acid (EPA), which is an omega-3 fatty acid found in fish oil. The medication works by reducing the production of triglycerides in the liver and increasing the breakdown of triglycerides in the blood.

According to the sources provided, there is no evidence to suggest that Vascepa affects the efficacy of blood pressure medication. The drug patent watch website [1] and the Medical News Today article [3] do not mention any interaction between Vascepa and blood pressure medication. The PubMed Central article [2] also does not report any significant interaction between Vascepa and blood pressure medication.

However, it is important to note that patients taking Vascepa should inform their healthcare provider about all medications they are taking, including blood pressure medication. This is because some medications can interact with each other, leading to potentially harmful side effects or reduced efficacy.

In conclusion, based on the sources provided, there is no evidence to suggest that Vascepa affects the efficacy of blood pressure medication. However, patients should always inform their healthcare provider about all medications they are taking to avoid potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4671468/
[3] https://www.medicalnewstoday.com/articles/drugs-vascepa