The fastest herblore xp method involves 1-ticking potions that have stackable ingredients. The highest level potion that you can 1-tick is extended antifires, which require lava scale shards mixed with regular antifires.
![](https://static.wixstatic.com/media/040c76_974c68eaa7c1401d86831c1c7f526110~mv2.gif)
1-ticking these is a little tricky since you have to move your mouse a lot more than the other methods, but doing this efficiently gets you almost 900k herblore xp per hour.
I wouldn’t do this method since theres so much clicking, so the fastest viable method out there is making ancient brews.
![](https://static.wixstatic.com/media/040c76_4011c55401684621999809f1438bad0b~mv2.gif)
Making ancient brews gets you about 520k herblore xp per hour.