EPA like DHA is an essential healthy which your body cannot produce alone. It is ideal for supporting heart health and cognition for people of all ages. You will often see EPA and DHA in the same product, the thing to be mindful of (like all supplements) is ensuring you are getting enough of a dose and that the ingredients are in the optimal form for absorption.
EPA is part of the omega-3 fatty acid family, which is known to also support healthy joint function. It is advisable to consume it regularly in your diet while also supplementing to ensure you are getting the full benefits of the ingredient.