Crystal vial

From Doom Wiki

Crystal vials are floating vials which restore 10% of the player's health. They appear in both Heretic and Hexen. They are equivalent to Doom's Stimpack, because they are too fragile to carry like the Quartz Flasks.

Heretic items
Health	Crystal Vial \| Quartz Flask \| Mystic Urn
Armor	Silver Shield \| Enchanted Shield
Items	Crystal Vial \| Map Scroll \| Bag of Holding \| Ammo
Artifacts	Chaos Device \| Morph Ovum \| Mystic Urn \| Quartz Flask \| Ring of Invincibility \| Shadowsphere \| Timebomb of the Ancients \| Tome of Power \| Torch \| Wings of Wrath

Hexen items
Health	Crystal Vial \| Quartz Flask \| Mystic Urn
Armor	Amulet of Warding \| Dragonskin Bracers \| Falcon Shield \| Mesh Armor \| Platinum Helm
Artifacts	Banishment Device \| Boots of Speed \| Chaos Device \| Dark Servant \| Disc of Repulsion \| Dragonskin Bracers \| Fléchette \| Icon of the Defender \| Krater of Might \| Mystic Ambit Incant \| Mystic Urn \| Porkalator \| Quartz Flask \| Torch \| Wings of Wrath
Others	Ammo \| Keys \| Puzzle Artifacts