Mistranslation here. It's not an aphrodisiac but something he was gonna use to kill himself with.
"What's all this jumble? Even an aphrodisiac? Oh, I remember now...I had secretly bought it last time but never got a chance to use it. " He threw away a small bottle and took out a large black sword, slightly surprised by its weight. "This is the only useful thing…" He said to himself with a bitter smile, "It weighs thirty-two catties and seven taels...I can hardly lift it. How I miss my sword, Stars Slayer. I wonder where it is now? Well, I'll use it before I open up all seven chakras."
Eastern · Taiyi Shengshui
BROTHERS, THERE IS NOW A MANHUA
ch 852 Epilogue
Monster Pet Evolution
Eastern · Wine Pool Inebriation