I mean, sure, there's Healing Potions, but are those the only things your party quaffs in D&D? If so, you're missing out and Potions and Herbalists can fix it. It's not just a list of potions, but also rules for making concoctions of your own. The book is up on Kickstarter now.
From the campaign:
I've always loved potions and the many possibilities they can add to any game, but more than potions, I love the rare ingredients, the processes, and the herbalist craftsmen behind them.
The goal of this book is to provide you with new ideas for developing the herbal side of your RPG sessions, which will increase the depth of your adventures and the enjoyment of your players.
This book goes beyond just describing potions and their effects, but tells the story of their creation, providing a solid foundation for their existence in your game.
The campaign's well far and away over its funding goal (which, being fair, wasn't much) with 9 days left to go.