This is also the recommended method of loosening a screw that is rusted into wood. (Additionlly, determine if it has loosened by tightening it further, instead of repeatedly trying to remove it, as doing so will deform the slot.) You can’t squirt penetrating oil onto wood and expect finishes to adhere correctly, nor give it a bath in an electrolysis tank.
There is no other tool than a screwdriver for the task (chisels and punches could be modified to do it). If you look at “perfect handle” screwdrivers, the designers provided a flat striking surface on the **** of the handle, and several other designs have steel inserts for the purpose. These are the types to use, but if you don’t have one handy...
As has been oft repeated, screwdrivers are consumables: in their normal range of use they come into contact with hardened, abrasive, and arcing materials. And then in a pinch they often substitute for the proper tool for a job - awl, chisel, prybar.