# Project Zomboid First Aid & Injury Treatment Guide (Build 42)
- **Game:** Project Zomboid
- **Category:** Survival & Crafting
- **Author:** LongBeam (https://guides-factory.com/about)
- **Difficulty:** Beginner
- **Reading time:** 10 min
- **Published:** 2026-08-22
- **Updated:** 2026-09-06
- **Tags:** Build 42, First Aid, Healing, survival
- **Canonical URL:** https://guides-factory.com/guides/project-zomboid-first-aid-injury-treatment-guide-build-42
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## 🎯 The core idea
> Most Project Zomboid players treat wounds the same lazy way — disinfect, bandage, move on — without ever learning what First Aid actually does. This guide explains every wound type, exactly what treats it, where to reliably find supplies, and which common beliefs about first aid (like leveling the skill making cuts heal faster) are flat-out wrong.
free costs nothing
cheap small cost
setup needs preparation
grind pays off slowly
skip the thing to stop doing
## What the First Aid skill actually does (and doesn't)
As the First Aid skill levels up, medical actions happen faster, bandages and poultices last longer, splints work better, and fractures heal faster. What it will not do is speed up how fast scratches, lacerations, or deep wounds themselves heal — the video calls this out directly as a common misconception, and the Project Zomboid Wiki confirms it explicitly: "First aid does not make wounds such as scratches or lacerations heal faster." Fracture recovery time is the one exception genuinely tied to skill level.
## Where to actually find first aid supplies
Pharmacies, doctor's offices, and hospitals all stock bandages, disinfectants, and pills, but stock is inconsistent — the video's own example, Courtland Medical in Muldraugh, was found nearly empty. The more reliable source is ambulances, which spawn scattered across the map and consistently contain trauma bags loaded with medical gear.
## Bandage types: the difference is durability, not healing speed
Every bandage type — adhesive bandages, standard bandages, sterilized bandages, denim strips, leather strips, and rags — heals wounds at exactly the same rate. The Project Zomboid Wiki's own bandage table matches the video's on-screen numbers precisely: Adhesive Bandages carry 1.5 bandage power, standard and Sterilized Bandages carry 4.0, and any dirty variant of a cloth bandage drops to 0.5. The only real difference between types is how quickly they get dirty and how well they resist infection — sterilized options last longest.
Since bandage power only affects how long a dressing lasts before needing replacement, don't feel pressured to hoard sterilized bandages specifically — any clean bandage works exactly as well the moment it's applied.
## Deep wounds: foreign bodies, stitches, and the full wound-type table
Deep wounds — commonly from glass shards or bullets — need the foreign object removed before anything else. Removing it by hand works but causes significant pain, so proper medical tools (tweezers or a suture needle holder) are the better option. Once removed, the wound still needs stitching, using either a dedicated suture needle or a plain needle and thread, followed by a bandage to protect the stitches.
This summary table lines up exactly with the Project Zomboid Wiki: scratches carry a 7% chance of Knox infection from a zombie-inflicted wound and lacerations carry 25%, both treated with disinfect-then-bandage; deep wounds and burns carry no Knox infection risk on their own; and any bite is a 100% Knox infection unless sandbox settings change the transmission rule to saliva-only.
## Herbal medicine: foraging your way to a self-sufficient med kit
Seven medicinal plants are foragable in Knox County, and the video's on-screen table matches the Project Zomboid Wiki's medicinal plants page exactly: Black Sage gives mild pain relief, Comfrey aids broken-bone recovery as a poultice, Common Mallow relieves cold and flu symptoms, Ginseng restores endurance, Lemongrass soothes food poisoning, Plantain aids wound recovery as a poultice, and Wild Garlic fights infection as a poultice. Comfrey, Plantain, and Wild Garlic all need to be ground into a poultice using a mortar and pestle (or a Herbalist trait / Wilderness Survival magazine to unlock the recipe) before they're usable that way — five units of the fresh or dried herb per poultice.
## Infection, sickness, and fractures: the conditions first aid doesn't fully fix
Wound infection causes pain and minor health loss when a wound is left unbandaged, but per the on-screen card, non-zombie infections are 100% survivable — only a Knox infection from a zombie scratch or bite is fatal. Disinfecting wounds, using sterilized bandages or rags, taking antibiotics, and applying a garlic poultice all fight infection. Being sick or having a cold both reduce character performance by severity, and can be muted (not cured) by holding a tissue or toilet paper to reduce the coughing and sneezing that attracts zombies.
Fractures are the one injury type genuinely tied to First Aid skill level for recovery speed, and their effects depend on which limb breaks: reduced speed for a leg, reduced combat ability for an arm, reduced endurance for a torso injury, and increased fatigue plus severe pain for a head injury. A splint is required to treat a fracture, and applying a Comfrey poultice on top cuts recovery time significantly according to the wiki.
From the comments (not in the video)Comments were empty on this upload, so no community tips are included here.
## How this guide was fact-checked
The Project Zomboid Wiki's First Aid page corroborates nearly every specific claim in this guide: the exact bandage power values shown on screen (Adhesive Bandages 1.5, standard/Sterilized Bandages 4.0, dirty cloth variants 0.5), the 7% and 25% Knox infection chances for zombie-inflicted scratches and lacerations respectively, the full medicinal plants table (effects, encumbrance, and which three plants require a poultice), the deep wound treatment order (remove foreign body, disinfect, stitch, bandage), and the explicit confirmation that First Aid skill level does not affect scratch or laceration healing speed, only fracture healing speed and bandage/poultice durability. One caveat: the wiki page itself is stamped as revised for version 41.78.16 (a Build 41 release) rather than Build 42, though every table and mechanic checked against this Build 42 video (2025-06-13, patch 42.8.1) matched without discrepancy, suggesting these particular systems carried over unchanged. No numeric conflicts between video and wiki were found in this pass.
## Is leveling First Aid worth it?
Given everything above, is the First Aid skill worth investing points or time into on its own? Mostly not, at least not for common wounds — since scratches, lacerations, and deep wounds all heal at the same rate regardless of skill level, the honest answer is that First Aid is only clearly worth prioritizing if fractures are a frequent problem in your run (reckless driving, falls) or if you're playing a support role treating other survivors faster. For a solo, careful playstyle, points are usually better spent elsewhere.
## What this guide doesn't answer
This video is scoped specifically to first aid treatment and wound types — it doesn't cover the separate Wound Infection / Knox infection incubation mechanics in depth beyond stating the percentages, nor does it cover the Animal Care skill's medical use on livestock, which the creator mentions only as a hypothetical future feature idea, not something currently in the game.
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## FAQ
### Does leveling First Aid make wounds heal faster in Project Zomboid?
No — this is one of the most common misconceptions in the game. First Aid skill level does not affect how fast scratches, lacerations, or deep wounds heal. What it does improve is how long bandages and poultices last, how effective splints are, and how fast fractures specifically heal. If you're mainly worried about common wounds, leveling First Aid is not worth prioritizing for that reason alone.
### What's the best way to find first aid supplies in Project Zomboid?
Pharmacies, doctor's offices, and hospitals stock medical supplies, but stock can be inconsistent — sometimes a clinic is nearly empty. Ambulances scattered around the map are a more reliable source: they consistently spawn with trauma bags containing large quantities of bandages, disinfectants, and pills, often enough to last for months of play.
### What's the difference between bandage types in Project Zomboid?
All bandage types heal wounds at exactly the same rate — Adhesive Bandages, standard Bandages, Sterilized Bandages, Denim Strips, Leather Strips, and Rags. The real difference is durability and infection resistance: Adhesive Bandages carry 1.5 bandage power, standard and Sterilized Bandages carry 4.0, and any dirty cloth variant drops to 0.5. Sterilized options simply last longer and resist getting dirty.
### How do you treat a deep wound with glass or a bullet in it in Project Zomboid?
First remove the foreign object — ideally with tweezers or a suture needle holder, since removing it by hand causes significant extra pain. Once removed, stitch the wound using a suture needle or a plain needle and thread, then apply a bandage on top to protect the stitches and continue healing.
### How do you treat a fracture in Project Zomboid?
Apply a splint to the fractured limb — this is the one injury type where First Aid skill level genuinely speeds up recovery. Effects depend on the injured limb: reduced speed for a leg, reduced combat ability for an arm, reduced endurance for a torso fracture, and increased fatigue plus severe pain for a head injury. Applying a Comfrey poultice alongside the splint further cuts recovery time.