Let's say there are 2 characters vs a monster.
1 character is unconscious.
If the 2nd character decides to stabilize the first then are they subject to an opportunity attack? Or are attacks against them at Advantage?
Note, I've read this Does stabilizing a character in combat provoke an attack of opportunity? but think this is a slightly different case as the 2nd character is still in combat but trying to heal their fellow party member.
Best Answer
Neither
I am going to assume that "you" are the character that is trying to stabilize the other.
You do not provoke an opportunity attack
The only thing in D&D 5e that provokes an opportunity attack is leaving an enemy's reach.
Using your action to stabilize a creature is not movement at all and thus will not provoke an OA.
It does not matter where you are or how many other player characters there are, conscious or otherwise.
Attacks are (probably) not made at advantage
Nowhere in the rules for stabilizing a creature does it say anything about attacks being at advantage against that creature. In fact nothing suggests this would be the case.
Conditions that allow an enemy to have advantage are well spelled out in an ability or spell or determined by the DM:
So no abilities that you have used in the example would cause attacks against you to have advantage. The DM however might decide that they do because of the circumstances of the fight, but most like they would tell you if this were the case.