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Project Zomboid Mods

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PZ Mods - Meds, Cures & Delays

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The Mod was created to bring more diverse mechanics to the medical and specifically infection parts of PZ. With a variety of Stims and Test Kits added to the game, survivors can now see whether injuries have caused infection of KX, delay the effects of the KX Virus, vaccinate against it for periods of time, and even cure it. However, these powerful experimental meds come with a long list of side effects, some affecting survivors for a number of Months after using...

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Mod Version PZ Versions Supported Multiplayer Customisation
v7.0.2 B41 & B42 🟢 🟢

Tell me more...

Sometimes the outlook on the endgame for PZ can seem a little "polar". You survive, or a scratch might kill you. I'm all for the brutality, no question about it, but more layers is where I'm going here. Instead of wondering for 24hours if you're going to slowly start turning green and craving a nibble on the neighbours neck. What if you could test for the virus? Vacinate against it for short periods? Delay it's progress? Or even cure it?!

Here's the catch, things you stab into your arm to intravenously ingest glowing green liquids are seldom a good idea... I mean, using radio active liquids to "fry" the virus in your bloody stream is "a solution"... however, let's be honest about this approach... side effects are possible. So here's what's known...

ViraBlast

ViraBlast

ViraBlast is an experimental cure for the KX Virus. A potent mix of a chemical cocktail, this stuff should be handled with care. Survivors who've taken this stuff and lived to tell the tale often refer to it's haunting green glow. ViraBlast will instantly cure the user from KX, however, due to the potency of the substance, there are severe side effects... These are both instant and re-occuring over a number of months after use.

Delivery Method: Single use stim injectors (Boxes contain multiple).

Side Effects - Severe (re-occuring up to 7 weeks): Chemical Burns, Exhaustion, Cold, Sickness, Depression, Panic, Hunger, Thirst.

ViraShield

ViraShield

Background Information: ViraShield is an experimental vaccine for the KX Virus. Another strong mix of unknown chemicals and partly dead virus cells make up this strange blue substance... ViraShield will protect users from contracting KX. Taking effect about an hour after injecting, ViraShield will keep the user protected for about 2 weeks. It is however an "active vaccine", and so is near lethal if taken by people already infected. In these circumstances it will massively increase the speed of death and turning due to KX. Similar to ViraBlast, but not quite as strong, the potent mix of chemicals involved is known to have a list of rather nasty side effects on the user.

Delivery Method: Single use stim injectors (Boxes contain multiple).

Side Effects - Strong (re-occuring up to 7 weeks): Chemical Burns, Exhaustion, Cold, Sickness, Depression, Panic, Hunger, Thirst.

ViraBoost

ViraBoost

Background Information: ViraBoost is an experimental KX delay medicine, orange in color with a vile potent smell. ViraBoost contains viral inhibitors, making this an effective solution to delay the progression of the KX infection. Typically buying the user an additional 96 hours/4days in time before normal course of the virus resumes. Taking multiple injections has been known to slow the virus by up to one month in total, however, side effects are also known to stack up for around 6 months in total.

Delivery Method: Single use stim injectors (Boxes contain multiple).

Side Effects - Moderate (re-occuring up to 7 weeks): Chemical Burns, Exhaustion, Cold, Sickness, Depression, Panic, Hunger, Thirst.

ViraChews

ViraChews

Background Information: ViraChews are another experimental delay medicine, with shorter delay and milder side effects. Known amongst survivors for their strange purple aura and usual potent smell. Taking a ViraChew will buy the user a 12 hour delay per pill taken. Taking multiple pills has been known to delay the progression of KX by up to 1 month. Side effects can stack up to 6 months though, so caution is advised.

Delivery Method: Found in Boxes containing 4 Pills each.

Side Effects - Mild (re-occuring up to 3 weeks): Exhaustion, Cold, Sickness, Depression, Panic, Hunger, Thirst.

ViraTest

ViraTest

Background Information: ViraTest kits are used to check if the user has contracted KX from injuries or other sources. Each box contains 2 "Breathers" that the user will need to blow into. ViraTest kits have been known to be "misused" by people with very little first-aid knowledge. Survivors with first-aid skill level 0 should be careful when interpreting the results.

Delivery Method: Found in Boxes containing 2 "Breathers".

Side Effects: There are no known side effects of using Breather test kits.

SANDBOX OPTIONS
Option Name Accepted Values Game Default Description
Enable After Effects True / False True Use this option to turn after effects for the 'Vira-Meds' on and off. This includes all stims and pills. With this option disabled, users will only suffer the effects of the meds when taking them. With this option enabled, users will get hit by random side effects of the types listed for a random time up to the time indicated in the information above.
Enable Cures True / False True Use this option to enable or disable cures for the KX Virus.
Enable Tests True / False True Use this option to enable or disable tests for the KX Virus.
Enable Fake Infections True / False True Use this option to enable or disable fake infection results from test kits. Fake results are only possible for survivors with 0 first aid skill. Results may show positive when negative OR negative when positive.
Special Z loot drop chance 0 - 99 25 Use this option to control the % chance of selected 'Special Z's' dropping 'Vira-Meds'. We recommend 25% with the default settings!
Experiment Cure/Virablast Spawn Multiplier 1 - 3 1 Use this option to adjust the static spawn multiplier for cures IF you have them enabled: 1 = Rare, 2 = Normal, 3 = Everywhere!
Patch Notes
Version Number Date Notes
1.0.0 01/09/2023 - Launched! (Seperated from S&C Mod)
1.1.0 02/09/2023 - Item naming change
- Distributions reduced
1.2.0 02/09/2023 - Fixed ViraShield bug
1.3.0 02/09/2023 - Fixed tooltip bug
- Fixed speech bug
1.4.0 10/09/2023 - Added ViraTest boxes
- Sandbox options added
- Added "Breather" tests
- Added fake infections for 0 first aid skill
2.0.0 29/10/2023 - Spawns overhaul
- Dynamic loot system for Med Z'S
- Sandbox options expanded
2.1.0 25/01/2024 - Added side effects
- Added more "special Z" types
2.1.1 26/01/2024 - Loot tweaks
- Balanced side effects
- Performance improvements
2.1.2 29/01/2024 - Virameds bug fix
2.1.3 12/02/2024 - Balanced side effects
- Variables bug fix
3.0.0 21/03/2024 - ViraSheild tweaks
- ViraBoost delay increased
- ViraChews delay increased
- Added delay effect stacking
- Minimal static spawns added for ViraBoost
3.0.1 31/03/2024 - Event system re-write
- Naming tweaks
- Data access tweaks
4.0.0 25/04/2024 - File naming overhaul
4.0.1 25/04/2024 - Dependency bug fixes
5.0.0 20/05/2024 - Re-write finalised
- Side effects system re-written
- New med spawns
- Sandbox options expanded
6.0.0 25/05/2025 - B42 port started
6.0.1 24/08/2025 - Recipe translation files added
- Compatibility changes for other mods
6.0.2 29/08/2025 - Logo and Brand change
6.0.3 16/09/2025 - World model allignment fixes
7.0.0 02/02/2026 - B42 MP Supported
- Side effects bug Fixed
- Speech bug Fixed
7.0.1 10/05/2026 - Tranlation file bug Fixed
7.0.2 06/08/2026 - Test results now show Vaccines!
- Minor bug fixes
I found a bug! 🔍🐛

If you have found a bug, or something isn't working as you expected, please drop into our discord and let us know - [KYR] Gaming Discord Server

We have a dedicated #tech-support channel where you can give us a shout directly, send us your logs, and we'll tell you exactly what's going on (using our own server for demo's if needed!). You'll get a response within a few hours tops, and we're always happy to help!