diff --git a/baystation12.dme b/baystation12.dme
index 2a272af5dd..065d2ff12b 100644
--- a/baystation12.dme
+++ b/baystation12.dme
@@ -1075,6 +1075,7 @@
 #include "code\modules\mob\living\carbon\human\life.dm"
 #include "code\modules\mob\living\carbon\human\login.dm"
 #include "code\modules\mob\living\carbon\human\logout.dm"
+#include "code\modules\mob\living\carbon\human\MedicalSideEffects.dm"
 #include "code\modules\mob\living\carbon\human\say.dm"
 #include "code\modules\mob\living\carbon\human\unarmed_attack.dm"
 #include "code\modules\mob\living\carbon\human\update_icons.dm"
diff --git a/code/modules/mob/living/carbon/human/MedicalSideEffects.dm b/code/modules/mob/living/carbon/human/MedicalSideEffects.dm
new file mode 100644
index 0000000000..62f9cf75f8
--- /dev/null
+++ b/code/modules/mob/living/carbon/human/MedicalSideEffects.dm
@@ -0,0 +1,149 @@
+// MEDICAL SIDE EFFECT BASE
+// ========================
+/datum/medical_effect
+	var/name = "None"
+	var/strength = 0
+	var/start = 0
+	var/list/triggers
+	var/list/cures
+	var/cure_message
+
+/datum/medical_effect/proc/manifest(mob/living/carbon/human/H)
+	for(var/R in cures)
+		if(H.reagents.has_reagent(R))
+			return 0
+	for(var/R in triggers)
+		if(H.reagents.get_reagent_amount(R) >= triggers[R])
+			return 1
+	return 0
+
+/datum/medical_effect/proc/on_life(mob/living/carbon/human/H, strength)
+	return
+
+/datum/medical_effect/proc/cure(mob/living/carbon/human/H)
+	for(var/R in cures)
+		if(H.reagents.has_reagent(R))
+			if (cure_message)
+				H <<"\blue [cure_message]"
+			return 1
+	return 0
+
+
+// MOB HELPERS
+// ===========
+/mob/living/carbon/human/var/list/datum/medical_effect/side_effects = list()
+/mob/proc/add_side_effect(name, strength = 0)
+/mob/living/carbon/human/add_side_effect(name, strength = 0)
+	for(var/datum/medical_effect/M in src.side_effects)
+		if(M.name == name)
+			M.strength = max(M.strength, 10)
+			M.start = life_tick
+			return
+
+
+	var/T = side_effects[name]
+	if (!T)
+		return
+
+	var/datum/medical_effect/M = new T
+	if(M.name == name)
+		M.strength = strength
+		M.start = life_tick
+		side_effects += M
+
+/mob/living/carbon/human/proc/handle_medical_side_effects()
+	//Going to handle those things only every few ticks.
+	if(life_tick % 15 != 0)
+		return 0
+
+	var/list/L = typesof(/datum/medical_effect)-/datum/medical_effect
+	for(var/T in L)
+		var/datum/medical_effect/M = new T
+		if (M.manifest(src))
+			src.add_side_effect(M.name)
+
+	// One full cycle(in terms of strength) every 10 minutes
+	for (var/datum/medical_effect/M in side_effects)
+		if (!M) continue
+		var/strength_percent = sin((life_tick - M.start) / 2)
+
+		// Only do anything if the effect is currently strong enough
+		if(strength_percent >= 0.4)
+			if (M.cure(src) || M.strength > 50)
+				side_effects -= M
+				M = null
+			else
+				if(life_tick % 45 == 0)
+					M.on_life(src, strength_percent*M.strength)
+				// Effect slowly growing stronger
+				M.strength+=0.08
+
+// HEADACHE
+// ========
+/datum/medical_effect/headache
+	name = "Headache"
+	triggers = list("cryoxadone" = 10, "bicaridine" = 15, "tricordrazine" = 15)
+	cures = list("alkysine", "tramadol", "paracetamol", "oxycodone")
+	cure_message = "Your head stops throbbing..."
+
+/datum/medical_effect/headache/on_life(mob/living/carbon/human/H, strength)
+	switch(strength)
+		if(1 to 10)
+			H.custom_pain("You feel a light pain in your head.",0)
+		if(11 to 30)
+			H.custom_pain("You feel a throbbing pain in your head!",1)
+		if(31 to INFINITY)
+			H.custom_pain("You feel an excrutiating pain in your head!",1)
+
+// BAD STOMACH
+// ===========
+/datum/medical_effect/bad_stomach
+	name = "Bad Stomach"
+	triggers = list("kelotane" = 30, "dermaline" = 15)
+	cures = list("anti_toxin")
+	cure_message = "Your stomach feels a little better now..."
+
+/datum/medical_effect/bad_stomach/on_life(mob/living/carbon/human/H, strength)
+	switch(strength)
+		if(1 to 10)
+			H.custom_pain("You feel a bit light around the stomach.",0)
+		if(11 to 30)
+			H.custom_pain("Your stomach hurts.",0)
+		if(31 to INFINITY)
+			H.custom_pain("You feel sick.",1)
+
+// CRAMPS
+// ======
+/datum/medical_effect/cramps
+	name = "Cramps"
+	triggers = list("anti_toxin" = 30, "tramadol" = 15)
+	cures = list("inaprovaline")
+	cure_message = "The cramps let up..."
+
+/datum/medical_effect/cramps/on_life(mob/living/carbon/human/H, strength)
+	switch(strength)
+		if(1 to 10)
+			H.custom_pain("The muscles in your body hurt a little.",0)
+		if(11 to 30)
+			H.custom_pain("The muscles in your body cramp up painfully.",0)
+		if(31 to INFINITY)
+			H.emote("me",1,"flinches as all the muscles in their body cramp up.")
+			H.custom_pain("There's pain all over your body.",1)
+
+// ITCH
+// ====
+/datum/medical_effect/itch
+	name = "Itch"
+	triggers = list("space_drugs" = 10)
+	cures = list("inaprovaline")
+	cure_message = "The itching stops..."
+
+/datum/medical_effect/itch/on_life(mob/living/carbon/human/H, strength)
+	switch(strength)
+		if(1 to 10)
+			H.custom_pain("You feel a slight itch.",0)
+		if(11 to 30)
+			H.custom_pain("You want to scratch your itch badly.",0)
+		if(31 to INFINITY)
+			H.emote("me",1,"shivers slightly.")
+			H.custom_pain("This itch makes it really hard to concentrate.",1)