diff --git a/Resources/Prototypes/Reagents/botany.yml b/Resources/Prototypes/Reagents/botany.yml
index 5f420c127d..428c4e50a5 100644
--- a/Resources/Prototypes/Reagents/botany.yml
+++ b/Resources/Prototypes/Reagents/botany.yml
@@ -266,6 +266,14 @@
             Burn: -2.5
           types:
             Bloodloss: -5
+      - !type:ModifyBloodLevel
+        amount: 1
+        conditions:
+        - !type:MetabolizerTypeCondition
+          type: [ Rat ]
+        - !type:ReagentCondition
+          reagent: Ammonia
+          min: 1
       - !type:Oxygenate # ammonia displaces nitrogen in vox blood
         conditions:
         - !type:MetabolizerTypeCondition