On mobile if you are using a normal bow always wait for it to get fully charged for more torpidity or if you are using regular arrows do the same for more damage. ThankYou

Btw on mobile to use the arrows drag the tranq arrow on your bow by holding then you can start firing them do the same process if you want to switch back to normal stone arrows

It shows all the arrows except Toxicant Arrows

Basically to make a tranq arrow you need to get narcotics and spoiled meat and then craft them using a a mortar and (something name i don't remember) then u can craft those narcotics with ur stone arrows and now u have tranq arrows

And to use it (on mobile) drag the arrows to ur bow or crossbow and then u will be able to use it