Upgrade calculator

Antitoxin Workshop

Each row is one upgrade: level N → N+1. Totals sum wood, grain, and herbs for steps we have in the guide. Level pickers run through 30; if your target is above the last level with data (currently 30), totals only cover upgrades through that level.

Training Grounds Farm

Current level

Target level

My Sanctuary level (optional)

Highlights steps where Sanctuary must be higher (1–30). Other prerequisites are listed per step.

*data can be incorrect too, please verify it before using

Totals for levels 1 → 2

Wood

148

Grain

148

Herbs

Steps

Data compiled for Last Asylum Guide · Maintainer: Slaughter Queen · Game balance may change with patches.

About Antitoxin Workshop

Priority: Medium

The Antitoxin Workshop produces antitoxin, a resource required to gather from plague-infected tiles on the world map. Higher levels increase antitoxin production rate and storage, directly expanding the number of plague zones you can safely gather from.

Upgrade Tips

1Upgrading Antitoxin Workshop is essential before pushing into higher-tier plague zones.
2A low antitoxin reserve limits your gathering marches — keep production ahead of demand.
3Antitoxin Workshop upgrades pair well with Herb Garden upgrades since herbs are used in antitoxin production.