How it works for example:

List of items:

• Half heart (h:heart_half)
  • Heals 1hp with regeneration;
  • Time of use: 1;
• Heart (h:heart)
  • Heals 2hp with continuous use and 3hp with intermittent use;
  • Usage time: 1.25.

Loot:

• Zombies: from 0 to 2 halves of the heart;
• Ifrit: 0 to 1 hearts or 0 to 2 halves of a heart;
• Cave spider from 0 to 3 halves of the heart;
• Creeper: from 0 to 2 halves of the heart;
• Drowned man: from 0 to 2 halves of the heart;
• Ancient Guardian: from 2 to 3 hearts and 2 halves of a heart;
• Enderman: from 0 to 1 heart or from 0 to 3 halves of a heart;
• Ghast: from 0 to 2 hearts;
• Giant: 4 hearts;
• Guardian: from 0 to 1 hearts;
• Hoglin: from 0 to 1 halves of the heart;
• Magma cube: from 0 to 1 half heart;
• Phantom: from 0 to 2 halves of the heart;
• Pillager: from 0 to 2 halves of the heart;
• Illager beast: from 0 to 2 hearts and from 0 to 1 half heart;
• Shulker: 1 heart;
• Silverfish: from 0 to 1 halves of the heart;
• Skeleton: from 0 to 2 halves of the heart;
• Slime: 1 half heart with a 15% chance;
• Spider: from 0 to 2 halves of the heart;
• Husk: from 0 to 2 halves of the heart;
• Summoner: 0 to 2 hearts and 0 to 1 half heart;
• Witch: from 0 to 1 heart;
• Wither: 2 to 3 hearts;
• Wither Skeleton: 1 heart or 1 to 2 heart halves;
• Zoglin: from 0 to 2 halves of the heart;
• Zombified Piglin: 0 to 2 halves of the heart.

You can find all past and future versions on CurseForge! And also more of my creativity on my discord channel (only RU).