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- "It seems there was some rather unusual kind of poison in that snake's fangs that keeps wounds open. They're sure they'll find an antidote, though; they say they've had much worse cases than mine, and in the meantime I just have to keep taking a Blood-Replenishing Potion every hour."
- —Arthur Weasley.[src]
The Blood-Replenishing Potion is a potion that tops up the blood levels of the drinker after blood loss from injury or other means.
During his stay at St Mungo's, Arthur Weasley was required to drink the potion every hour after he was bitten by Nagini, while guarding the Hall of Prophecy, at least until an antidote for Nagini's venom was found.