diff --git a/code/modules/atmospherics/gasmixtures/reactions.dm b/code/modules/atmospherics/gasmixtures/reactions.dm
index c3be9aca027..4db11264de0 100644
--- a/code/modules/atmospherics/gasmixtures/reactions.dm
+++ b/code/modules/atmospherics/gasmixtures/reactions.dm
@@ -26,7 +26,8 @@ halon_formation = 15
 sivana_formation = 16
 raynar_crystal_production = 17
 roinneil_crystal_production = 18
-cymar crystal_production = 19
+cymar_crystal_production = 19
+roinneil_response = 20
 nobiliumsuppression = INFINITY
 */
 
diff --git a/code/modules/reagents/chemistry/reagents/other_reagents.dm b/code/modules/reagents/chemistry/reagents/other_reagents.dm
index 88b875707a9..c3bc943fa19 100644
--- a/code/modules/reagents/chemistry/reagents/other_reagents.dm
+++ b/code/modules/reagents/chemistry/reagents/other_reagents.dm
@@ -1350,6 +1350,23 @@
 	if(isplasmaman(L))
 		REMOVE_TRAIT(L, TRAIT_NOFIRE, type)
 	return ..()
+
+/datum/reagent/raynar
+	name = "Raynar"
+	description = "A Powerful sleeping agent with healing properties"
+	reagent_state = GAS
+	metabolization_rate = REAGENTS_METABOLISM * 0.5
+	color = "90560B"
+	taste_description = "rubbery"
+
+/datum/reagent/raynar/on_mob_metabolize(mob/living/L)
+	. = ..()
+	ADD_TRAIT(L, TRAIT_KNOCKEDOUT, type)
+
+/datum/reagent/raynar/on_mob_end_metabolize(mob/living/L)
+	REMOVE_TRAIT(L, TRAIT_KNOCKEDOUT, type)
+	return ..()
+
 /////////////////////////Colorful Powder////////////////////////////
 //For colouring in /proc/mix_color_from_reagents
 
diff --git a/code/modules/surgery/organs/lungs.dm b/code/modules/surgery/organs/lungs.dm
index 28108994055..be3d10e4f17 100644
--- a/code/modules/surgery/organs/lungs.dm
+++ b/code/modules/surgery/organs/lungs.dm
@@ -333,9 +333,9 @@
 
 	// Raynar
 		var/raynar_pp = breath.get_breath_partial_pressure(breath_gases[/datum/gas/raynar][MOLES])
-		if(raynar_pp > 0.01)
-			H.Unconscious(200)
-			H.Sleeping(200)
+		if(raynar_pp > gas_stimulation_min)
+			var/existing = H.reagents.get_reagent_amount(/datum/reagent/raynar)
+			H.reagents.add_reagent(/datum/reagent/raynar,max(0, 1 - existing))
 			H.adjustOxyLoss(-5)
 			H.adjustFireLoss(-7)
 			H.adjustToxLoss(-7)
@@ -347,7 +347,7 @@
 		// Inert
 	// Cymar
 		var/cymar_pp = breath.get_breath_partial_pressure(breath_gases[/datum/gas/cymar][MOLES])
-		if(cymar_pp > 0.1)
+		if(cymar_pp > gas_stimulation_min)
 			H.adjustBruteLoss(25)
 			H.adjustOxyLoss(5)
 			H.adjustFireLoss(8)