So, there are 34 items in the game that(in my opinion) fit into the "medicines and boosts" category. I've divided them into 4 subtypes:
— Healing items (11 items);
— Stimulants (7 items);
— Boost items (12 items);
— Biome items (4 items);

"Healing items" - medications that remove the corresponding negative effects and sometimes heal you.

"Stimulants" - drugs that simply provide various buffs and don't heal existing injuries. They can affect water values ​​and do NOT regenerate HP.

"Boost items" - the same candies you find in vending machines. They can only be obtained by purchasing them. Don't heal, but have unique effects.

"Biome items" - serums that provide protection from negative biome effects.

Here is a table showing all the debuffs that can be cured with items, along with the corresponding remedies required.

Hope I've helped you figure out with medicaments in such a great game as 7 Days To Die.
Also I'd be very grateful if you and your friends would rate this guide!