diff --git a/runelite-api/src/main/java/net/runelite/api/Actor.java b/runelite-api/src/main/java/net/runelite/api/Actor.java
index a523555648..c469343004 100644
--- a/runelite-api/src/main/java/net/runelite/api/Actor.java
+++ b/runelite-api/src/main/java/net/runelite/api/Actor.java
@@ -69,21 +69,22 @@ public interface Actor extends Renderable
 	Actor getInteracting();
 
 	/**
-	 * Gets the health ratio of the actor.
-	 * <p>
-	 * The ratio is the number of green bars in the overhead
-	 * HP display.
+	 * Gets the health of the actor in {@link #getHealthScale()} units.
 	 *
-	 * @return the health ratio
+	 * The server does not transmit actors' real health, only this value
+	 * between zero and {@link #getHealthScale()}. Some actors may be
+	 * missing this info, in which case -1 is returned.
 	 */
 	int getHealthRatio();
 
 	/**
-	 * Gets the health of the actor.
+	 * Gets the maximum value {@link #getHealthRatio()} can return
 	 *
-	 * @return the health
+	 * For actors with the default size health bar this is 30, but
+	 * for bosses with a larger health bar this can be a larger number.
+	 * Some actors may be missing this info, in which case -1 is returned.
 	 */
-	int getHealth();
+	int getHealthScale();
 
 	/**
 	 * Gets the server-side location of the actor.
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
index 2ec7b192ab..5dc68a3bf1 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
@@ -100,10 +100,10 @@ class OpponentInfoOverlay extends OverlayPanel
 			return null;
 		}
 
-		if (opponent.getName() != null && opponent.getHealth() > 0)
+		if (opponent.getName() != null && opponent.getHealthScale() > 0)
 		{
 			lastRatio = opponent.getHealthRatio();
-			lastHealthScale = opponent.getHealth();
+			lastHealthScale = opponent.getHealthScale();
 			opponentName = Text.removeTags(opponent.getName());
 
 			lastMaxHealth = null;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerBarOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerBarOverlay.java
index df4da38850..522c1aa754 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerBarOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/prayer/PrayerBarOverlay.java
@@ -165,7 +165,7 @@ class PrayerBarOverlay extends Overlay
 			return;
 		}
 
-		if (config.hideIfOutOfCombat() && localPlayer.getHealth() == -1)
+		if (config.hideIfOutOfCombat() && localPlayer.getHealthScale() == -1)
 		{
 			showingPrayerBar = false;
 		}
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/TargetWeaknessOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/TargetWeaknessOverlay.java
index 8a036eff83..91f331d06b 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/slayer/TargetWeaknessOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/slayer/TargetWeaknessOverlay.java
@@ -106,7 +106,7 @@ class TargetWeaknessOverlay extends Overlay
 			return -1;
 		}
 
-		final int healthScale = target.getHealth();
+		final int healthScale = target.getHealthScale();
 		final int healthRatio = target.getHealthRatio();
 		final Integer maxHealth = npcManager.getHealth(target.getId());