diff --git a/code/modules/surgery/organs/stomach.dm b/code/modules/surgery/organs/stomach.dm
index 985da6480bb..f9480287af1 100755
--- a/code/modules/surgery/organs/stomach.dm
+++ b/code/modules/surgery/organs/stomach.dm
@@ -85,14 +85,24 @@
 	if(!nutri)
 		return
 
+	// remove the food reagent amount
+	var/nutri_vol = nutri.volume
+	var/amount_food = food_reagents[nutri.type]
+	if(amount_food)
+		nutri_vol = max(nutri_vol - amount_food, 0)
+
+	// found nutriment was stomach food reagent
+	if(!(nutri_vol > 0))
+		return
+
 	//The stomach is damage has nutriment but low on theshhold, lo prob of vomit
-	if(prob(damage * 0.025 * nutri.volume * nutri.volume))
+	if(prob(damage * 0.025 * nutri_vol * nutri_vol))
 		body.vomit(damage)
 		to_chat(body, "<span class='warning'>Your stomach reels in pain as you're incapable of holding down all that food!</span>")
 		return
 
 	// the change of vomit is now high
-	if(damage > high_threshold && prob(damage * 0.1 * nutri.volume * nutri.volume))
+	if(damage > high_threshold && prob(damage * 0.1 * nutri_vol * nutri_vol))
 		body.vomit(damage)
 		to_chat(body, "<span class='warning'>Your stomach reels in pain as you're incapable of holding down all that food!</span>")