She called out health care misinfo on TikTok. Then, the trolls found her.

The video posted to TikTok showed a woman in a blue cardigan and brown medical scrubs dancing to a remix of Wale's "Lotus Flower Bomb."

On screen, sandwiched between two sparkle emojis, the woman, who said she was a pharmacy technician, had written, "Most common meds I've filled that cause cancer." She then went on to claim medications like hormonal birth control, cholesterol medications and chemotherapy were cancer causing.

So, Savannah Sparks, another TikTok user who goes by “Rx0rcist,” made her own video, part of what would become an ongoing series debunking medical misinformation on the app.

“My name’s Savannah. I’m a doctor at a pharmacy, and I’m about to absolutely wreck your s---,” Sparks says in the video before launching into a fact-check of the pharmacy technician's claims.

But Sparks didn't stop there. She then contacted the woman's supervisor.