@MrsT @LifesABeachI did a little research. Looks like it was called Fen-Phen ....Fenfluramine/phentermine:
The drug combination fenfluramine/phentermine, usually called fen-phen, is an anti-obesity medication that is no longer widely available. It was sold in the early 1990s, and utilized two anorectics.Fenfluramine was withdrawn from the U.S. market in 1997 after reports of heart valve disease and continued findings of pulmonary hypertension, including a condition known as cardiac fibrosis. It was subsequently withdrawn from other markets around the world. On it's own, it doesn't have this heart valve risk, but it's still only available with a prescription.

@Catmae :
Thank you. I had a friend that took it for a short time. Her whole personality would change when she was on it. I remember her telling me it felt like someone was sitting on her chest. She was a younger girl and I was ticked that the doctor ever prescribed it to her. 🤨

Anyone remember AdvoCare?Much of their products were based on a mutation of the drugs. I bought in for a short time. Had a really bad experience and threw it all away.