There are many battlegrounds between magic and technology. On the battlefield of healing, technology is severely disadvantaged. The disadvantage is in the fact that if you want to heal yourself you have to keep healing salves on you. This is understandable but can also be inconvenient for some who may be in some rough areas like deep caverns. The idea of packing enough salves to last the whole trip is just stupendous. How is an adventurer supposed to loot a crypt if he is stockpiled with healing salves. This is a problem that is unheard of to mages, their biggest issue is they may have to stop and wait a few minutes until they are ready to heal again. This is why I would suggest to bring balance to the battle between magic and technology via stacking salves. If salves were stackable such as gold, bullets, fuel, or arrows then it would be easy to collect the needed amount for a long journey without the difficulties of space conservation. Now I ask how difficult would it be to accomplish such a mission?