diff --git a/code/modules/organs/subtypes/parasite.dm b/code/modules/organs/subtypes/parasite.dm
index 7cb71de548a..9ba6da2e484 100644
--- a/code/modules/organs/subtypes/parasite.dm
+++ b/code/modules/organs/subtypes/parasite.dm
@@ -139,7 +139,8 @@
 
 		if(prob(5))
 			owner << "<span class='warning'>You feel something squirming inside of you!</span>"
-			owner.reagents.add_reagent("phoron", 4)
+			owner.reagents.add_reagent("phoron", 6)
+			owner.reagents.add_reagent("blackkois", 4)
 
 		else if(prob(10))
 			owner << "<span class='warning'>You feel disorientated!</span>"
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm
index ad119ac4441..81ab53a3c96 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm
@@ -165,8 +165,11 @@
 	glass_name = "glass of ethanol"
 	glass_desc = "A well-known alcohol with a variety of applications."
 
-/datum/reagent/alcohol/ethanol/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)//Vaurca are damaged instead of getting nutrients, but they can still get drunk
+/datum/reagent/alcohol/ethanol/affect_ingest(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))//Vaurca are damaged instead of getting nutrients, but they can still get drunk
 		M.adjustToxLoss(1.5 * removed * (strength / 100))
 	else
 		M.adjustNutritionLoss(-nutriment_factor * removed)
@@ -212,8 +215,11 @@
 	glass_name = "glass of butanol"
 	glass_desc = "A fairly harmless alcohol that has intoxicating effects on certain species."
 
-/datum/reagent/alcohol/butanol/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	if (alien == IS_VAURCA)
+/datum/reagent/alcohol/butanol/affect_ingest(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
 		M.adjustToxLoss(removed * (strength / 100))
 	else
 		M.adjustNutritionLoss(-nutriment_factor * removed)
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
index f8413474082..67fd5d6d656 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm
@@ -11,12 +11,16 @@
 	unaffected_species = IS_MACHINE
 	var/kois_type = 1
 
-/datum/reagent/kois/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)
+/datum/reagent/kois/affect_ingest(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
 		M.heal_organ_damage(1.2 * removed, 1.2 * removed)
 		M.adjustToxLoss(-1.2 * removed)
 		M.adjustNutritionLoss(-nutriment_factor * removed)
 		M.add_chemical_effect(CE_BLOODRESTORE, 6 * removed)
+
 	else
 		M.adjustToxLoss(1 * removed)
 		if(istype(M,/mob/living/carbon/human))
@@ -104,8 +108,11 @@
 		return
 	affect_ingest(M, alien, removed)
 
-/datum/reagent/nutriment/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)
+/datum/reagent/nutriment/affect_ingest(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
 		M.adjustToxLoss(1.5 * removed)
 	else if(alien != IS_UNATHI)
 		digest(M,removed)
@@ -3754,8 +3761,12 @@
 	adj_sleepy = -3
 	taste_description = "viscous cola"
 
-/datum/reagent/drink/zorasoda/drone/affect_ingest(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)
+/datum/reagent/drink/zorasoda/drone/affect_ingest(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
 		M.add_chemical_effect(CE_SPEEDBOOST, 1)
 		M.add_chemical_effect(CE_BLOODRESTORE, 2 * removed)
 		M.make_jittery(5)
diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm
index 25a49c9a328..2f167fea8b1 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm
@@ -73,6 +73,13 @@
 /datum/reagent/toxin/phoron/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
 	if(ishuman(M))
 		var/mob/living/carbon/human/H = M
+
+		var/obj/item/organ/parasite/PA = H.internal_organs_by_name["blackkois"]
+		if((istype(PA) && PA.stage >= 3))
+			H.heal_organ_damage(2 * removed, 2 * removed)
+			H.add_chemical_effect(CE_BLOODRESTORE, 8 * removed)
+			H.adjustToxLoss(-2 * removed)
+
 		if(alien == IS_VAURCA && H.species.has_organ["filtration bit"])
 			metabolism = REM * 20 //vaurcae metabolise phoron faster than other species - good for them if their filter isn't broken.
 			var/obj/item/organ/vaurca/filtrationbit/F = H.internal_organs_by_name["filtration bit"]
@@ -88,6 +95,7 @@
 					return
 				else
 					P.air_contents.adjust_gas("phoron", (0.5*removed))
+
 		else
 			..()
 	else
@@ -101,8 +109,12 @@
 		L.adjust_fire_stacks(amount / 5)
 
 /datum/reagent/toxin/phoron/affect_touch(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)
-		return
+	if(istype(M, /mob/living/carbon/human))
+		var/mob/living/carbon/human/H = M
+		var/obj/item/organ/parasite/P = H.internal_organs_by_name["blackkois"]
+		if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
+			return
+
 	M.take_organ_damage(0, removed * 0.1) //being splashed directly with phoron causes minor chemical burns
 	if(prob(50))
 		M.pl_effects()
@@ -124,8 +136,12 @@
 	conflicting_reagent = /datum/reagent/toxin/phoron
 	strength = 1
 
-/datum/reagent/toxin/cardox/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
-	if(alien == IS_VAURCA)
+/datum/reagent/toxin/cardox/affect_blood(var/mob/living/carbon/human/M, var/alien, var/removed)
+	if(!istype(M))
+		return
+
+	var/obj/item/organ/parasite/P = M.internal_organs_by_name["blackkois"]
+	if((alien == IS_VAURCA) || (istype(P) && P.stage >= 3))
 		M.adjustToxLoss(removed * strength*2)
 	else
 		M.adjustToxLoss(removed * strength)
diff --git a/html/changelogs/lordfowl-kois.yml b/html/changelogs/lordfowl-kois.yml
new file mode 100644
index 00000000000..ba7e7f62282
--- /dev/null
+++ b/html/changelogs/lordfowl-kois.yml
@@ -0,0 +1,6 @@
+author: LordFowl
+
+delete-after: True
+
+changes: 
+  - tweak: "Poor unfortunate souls afflicted by Black K'ois now have greater longevity and are in some cases more Vaurca than man."