Chapter 498: Forbidden for Many Years

"Master, who has upset you?" Fei Canqing asked cautiously.

Yun Yue frowned tightly with a hint of spite, her voice lacking warmth, "How's the research going on the medicine I asked you to study? Is there an antidote?"

"I've worked it out, but I forgot to tell you earlier because I was busy. The medicine from D Laboratory is a forbidden drug, and an antidote is even more unlikely. Short-term usage can cause headaches and memory decline, while long-term use can lead to irreversible brain damage that is difficult to repair," Fei Canqing said curiously, looking at her.

Such medicine could cause brain decay; anyone who took it long-term wouldn't live past fifty.

Yun Yue's eyes narrowed slightly, D Laboratory again!

"But this drug was completely destroyed over twenty years ago. Where did you get it?" Fei Canqing asked earnestly.

Back then, there was an abundance of forbidden drugs in D Laboratory, but the harmful ones were all destroyed, leaving only those that could save lives.