DayZ field wiki · Medical
Tetracycline
The infection pill
Short answer
Wound infection and some sicknesses want tetra. Charcoal is a different bottle. Guessing wastes the last one.
Also: tetra · antibiotic
How it works
Tetracycline is the antibiotic people mean when they say the pills. It is not charcoal. It is not a vitamin. No dose chart here.
What to do
Read the symptom, then the bottle. Clean the wound first.
Don't
Don't eat the whole bottle as a bit.