Greater Healing Potion

How to get

Monster	Lv	How	Quantity	Chance
Cruma Phantom	50	spoil	1–55	92.7%
Crypt Archon	50	spoil	1	78.9%
Purgatory Invader Elite Soldier	50	spoil	1–3	72%
Ginzu Golem Prodigy X	52	spoil	1–3	68.2%
Liele Elder	52	spoil	1	66.5%
Zaken's Guard	50	spoil	1	62.9%
Purgatory Invader Martyrs	50	spoil	1	62.9%
Kaim Vanul	51	spoil	1	56.2%
Horrifying Cannon Golem	52	spoil	1–3	54.7%
Kaim Vanul Lad	51	spoil	1–3	51.3%
Death Knight	50	spoil	1–3	50.9%
Zaken's Guard	50	spoil	1	44.4%
Hunter Gargoyle	52	spoil	1	40.3%
Kaim Vanul	51	spoil	1	39.7%
Tairim	50	spoil	1	34%
Soldier of Grief	51	spoil	1	33.7%
Zaken's Royal Guard	50	spoil	1	32.7%
Harit Lizardman	50	spoil	1	32.4%
Spelunking Ant	50	spoil	1	30.8%
Sanhidro	52	spoil	1	30.7%
Kaim Vanul	51	spoil	1	29.2%
Elder Tarlk Basilisk	51	spoil	1	27.9%
Treasures of the Festival	72	drop	1	25.1%
Treasures of the Festival	72	drop	1	25.1%
Sirra's Beholder minion	59	drop	1	22.8%
Treasures of the Festival	63	drop	1	18.7%
Treasures of the Festival	63	drop	1	18.7%
Purgatory Invader Elite Soldier	50	spoil	1	16%
Treasures of the Festival	52	drop	1	12.9%
Treasures of the Festival	52	drop	1	12.9%
Perum	48	drop	1	3.14%
Garden Guard	48	drop	1	3.02%
Torfe	49	drop	1	2.79%
Horrifying Cannon Golem III	51	drop	1	2.63%
Ol Mahum Transcender	58	drop	1	2.57%
Ol Mahum Transcender	55	drop	1	2.33%
Ragna Orc Sorcerer	50	drop	1	1.94%
Purgatory Invader Priest	50	drop	1	1.89%
Cruel Vice Golem	49	drop	1	1.75%
Theeder Piker	48	drop	1	1.67%
Ol Mahum Transcender	53	drop	1	1.66%
Ol Mahum Transcender	50	drop	1	1.38%
Vanor Silenos Warrior	48	drop	1	1.37%
Forest of Mirrors Ghost	47	drop	1	1.13%
Deprive	50	drop	1	0.9653%
Elder Tarlk Basilisk	51	drop	1	0.8868%

Chances are from the server scripts, without the server rates.