Megan Fox is trading in her Hollywood roles for a different kind of starring part: an erectile dysfunction (ED) medication.

The actress plays Ro Sparks, the fictional face of Ro’s prescription ED treatment, in a spicy new ad for the healthcare company.

The “Jennifer’s Body” actress, 40, slipped into a skintight red catsuit emblazoned with the Ro Sparks logo for the campaign, transforming into the embodiment of the medication itself.

“I personally feel like maybe I was born for this. There’s not a better person to have been involved in this,” Fox told People in an interview published Thursday.

“Why take something that is already a heavy topic and make it heavier? It already feels serious, so let it feel fun.”

Ro Sparks is a prescription treatment for ED that contains sildenafil, the active ingredient in Viagra, and tadalafil, the active ingredient in Cialis.

According to Ro, the treatment “dissolves under your tongue for faster results.”

In the ad, Fox quite literally becomes the drug, delivering information about Ro Sparks through a series of cheeky one-liners.

“If prescribed, I show up right at your door. Don’t worry, my packaging is very discreet,” she says at one point in the ad.

Fox told People that she hopes the campaign’s humor will help take some of the shame out of talking about ED.

“You’re not defective. Something’s not wrong with you. You can talk about this. You don’t have to hide it,” she told the outlet.

The “Transformers” star also said that she initially expected she and her team would have to give the campaign’s creators plenty of notes: “This should be way funnier. This should be sexier. This should be more playful.”

“We actually had to go back and be like, ‘Maybe we could dial it down a little bit,’” Fox continued. “Because they really went for it with some of the jokes and the innuendos, which I love.”

Fox is no stranger to a steamy look.

Most recently, she stripped down for an Instagram photo shoot, posing in a leather bandeau top, chaps and an oversized green coat in front of a bright blue G-Wagon.

The “Teenage Mutant Ninja Turtles” actress is also a mom of four.

She shares daughter Saga Blade Fox-Baker, 1, with her on-again, off-again ex, MGK, and sons Noah, 14, Bodhi Ransom, 12, and Journey River, 10, with ex-husband Brian Austin Green.