(Plays extremely well with other mods that make the game brutal like Scape N Run)
Basic Health Pack Stats
Health Packs can be swiftly used from outside of your inventory using a keybind
This keybind is called Quick Health Pack Use and the default bind is G and is found in the Misc section cant show a picture here becuase of curseforges's stupid rules on image size but whatever
Health Packs dont have their own creative tabs like other mods instead Health Packs are found in the combat tab

Health Packs in survival have 2 basic components to be crafted:

Gold Gel's Crafting Recipe

The Medical Grade Injectable Canister's Crafting Recipe

And finaly the health pack itself

(Also when getting a health pack for the first time you will get a achievement thats a refrence to Deadspace)
(I have not tested this mod on a server however it should work just fine)
(I also recomend playing with JEI since theres no way to get the recipe in game for any items)