This one isn't a brand-specific advert – instead, it's a type of advert that's seemingly quite common on the platform.
According to a New York Times analysis of Truth Social ads, most of the boosted posts on the social media site use "grotesque" images to promote alternative medicine or health-related conspiracy theories.
While ads such as this one, which claims that "Big Pharma [is] In Panic!," aren't exclusive to Truth Social, they're typically seen on sites with lower quality adverts that aren't tailored to a specific audience.
This could indicate that Trump's network has struggled to find reputable partners, something that The New York Times attributes to the platform's older user base, which is less attractive to advertisers. It's also potentially linked to Truth Social's comparative lack of analytics tools and the reluctance of many businesses to become associated with Trump's brand of politics.