How to Cure Sickness in Project Zomboid
"Sick" is a category in Project Zomboid, not a single condition. The cure depends entirely on which type. Diagnosing the cause first is half the work — apply the wrong cure and you waste resources while the real cause kills you.
The Five Types of Sickness
| Type | Source | Cure |
|---|---|---|
| Food Poisoning | Rotten food, raw meat, undercooked food, poisonous mushrooms/berries, unboiled water | Wait + well-fed + rested. Lemongrass speeds recovery. |
| Corpse Decay Sickness | Spent too long near dead bodies — risk scales with corpse count nearby | Move or burn the corpses. Wait it out while well-fed and rested. |
| Cold / Flu | Got wet or chilled, especially while exhausted | Get warm, dry, sleep. Common Mallow directly reduces cold/flu illness level. |
| Smoking-induced | Smoked as a non-smoker | Stop. Clears in a few in-game hours. |
| Knox Virus (zombification) | Bite (100%), zombie laceration (25%), zombie scratch (7%) | None. Fatal in vanilla settings. |
Cure 1: Food Poisoning
- Stop eating contaminated food. Inspect every food item — fresh = green, fresh-but-aging = yellow, rotten = red.
- Stay Well-Fed (dark green hunger moodle).
- Stay rested — sleep removes the Tired moodle, which compounds with sickness.
- Eat Lemongrass if available. It significantly reduces food-poisoning severity. Forage in grasslands and forests.
- The Herbalist trait + Herbalist magazine teaches you to identify Lemongrass before eating; without them, you may misidentify wild plants.
Cure 2: Corpse Decay Sickness
- Identify the corpse count near your character. Three to five is the threshold where most players start getting queasy.
- Drag corpses (right-click body > Grab) and move them away from your base, or stack them and burn with a propane torch + lighter.
- Stay well-fed and rested while it clears.
Cure 3: Cold / Flu
- Get inside, dry off (change clothes if wet), warm up next to a fireplace or wear thicker layers.
- Eat Common Mallow if foraged — it directly lowers the cold/flu illness level.
- Sleep. Cold/flu severity decays during sleep and clears within a few in-game days.
Cure 4: Knox Virus (No Cure)
If your queasy/nauseous moodle followed a confirmed zombie bite or laceration in the last 24 hours, this is the Knox Virus. There is no cure in vanilla settings — the moodles will worsen until your character dies and reanimates. See our laceration guide for infection chance per wound type.
Prevention Checklist
- Cook meat thoroughly. Raw = guaranteed queasy.
- Boil river water and rain water before drinking.
- Burn or move corpses regularly around your base.
- Pack rain ponchos and dry spare clothes for long expeditions.
- Don't smoke if you don't have the Smoker trait.
- Foraging without Herbalist? Eat only the plants you've identified before — wrong wild mushrooms are a death sentence.
Don't get sick. Host a Project Zomboid server with Supercraft and survive Knox Country with friends.