Troll's Blood Potion

You regain 1d4 Hit Points at the start of your
turn for 1 minute after you drink this potion.
This effect doesn't occur at the start of your next
turn if you have taken fire or acid damage.
The effect can revive an unconscious creature
unless fire or acid damage knocked them
unconscious, at which point the effects of the
potion cease.
Drinking or administering the potion takes
an action.