
This stuff kicks butt, really. It's great if you are feeling weak, and want to attack a large group, or an especially dangerous critter. Drink this Serum and you will gain 100 health!! It's a heady feeling. Since you will automatically heal over time, this applies with Rolly's as well. But BEWARE, it wears off after an hour.
Requirements
To craft this you need to have Alchemy Level 1. 
Ingredients:
This item is made with Carnivore Lily Petals, Thistle, and Great Fern Sap.
What to look for:
Gather and Make! Rolly's Serum only lasts for about an hour, so if you are relying on it, be aware that it will run out. When it wears out, it wears out your max health will drop after its use, and only time will reset you to 100%. Usual drop after one dose is 9 points in health. Taking multiples back to back, will make hunting very difficult when you run out. I've heard you can drop as far as 1/1 hp if you get carried away. This item is nice to have on hand, but use with caution.
Weight: 0.1 kg
Dump value 100 Gold
A image with what Rolly's serum buff looks like can be found here