[RPG] Can you only gain the benefits of a healing potion by drinking it


My PCs will find in a body of a half-orc an unmarked bottle with a potion of healing. What if they think that this is a poison which drows often use in my campaign? They would pour the bottle on their swords.

Does a potion of healing have a different effect if applied on an open wound, such as when the PCs slice enemies with it?

The potion of healing's description states:

You regain hit points when you drink this potion.

I assume that using it differently it has no effect, but maybe there is some information about it deeper. If not, I can always improvise, but maybe it's better to let it be with no effect.

Best Answer

RAW, the effects only apply when it is consumed "per os". (Emphasis mine).

You regain 2d4 + 2 Hit Points when you drink this potion