Based on my testing during Shadowlands (pre-patch through 9.0.2), here are the best healing potions at various level ranges:
Level 1: 考察队治疗药水 (can only be obtained in Exile's Reach -- the new starter zone in the Shadowlands prepatch)
Levels 2-9: 考察队治疗药水 or 次级治疗药水 (whichever is cheaper)
Levels 10-31: 钢铁部落活力药水
Levels 32-34: 钢铁部落活力药水 or 神效治疗药水 (they heal the same amount, so pick whichever is cheaper)
Level 35: 钢铁部落活力药水 or 神效治疗药水 or 治疗滋补剂 (they all heal the same amount, so pick whichever is cheaper)
Levels 36-39: 治疗滋补剂
Levels 40-44: 深渊治疗药水
Level 45: 星界治疗药水 for one level only!
Levels 46-55: Back to 深渊治疗药水
Levels 56-60: 灵魂治疗药水

*Note: If you start in Exile's reach, you have no access to mailboxes until you leave at level 10. You also cannot use the 凯蒂的印哨 toy; if you try to use it, you get an error that you can't use that item during tutorial.*

小知识

屏幕截图

视频

考察队治疗药水

物品等级：3

使用: 恢复80点生命值。 (5分钟冷却)

最大叠加: 200

售价: 25

指南