Healer mech serum

From RimWorld Wiki
Jump to navigation Jump to search

Healer mech serum

Healer mech serum.png

A one-use super-dose of mechanites tuned to heal health conditions. The mechanites will target and heal the single worst health condition affecting someone at any given time. Works even on health conditions that would otherwise be incurable. The mechanites can even transmute themselves into organic matter, forming new limbs or organs as needed.

Exotic Item
Stack Limit

Base Stats

Deterioration Rate
Market Value
Max Hit Points

Stat Modifiers

The Healer mech serum is an item that can be awarded from quests.

Pawns can be directed to use it, or it can be administered by medical procedure. When used, it instantly removes the most severe health problem on the pawn, with few exceptions. If there are no healable conditions, the serum will still be used up.


Below are the conditions which the serum cannot treat:

  • Luciferium need
  • Drug tolerances
  • Anesthetic

To regrow a missing body part, the artificial part has to be removed first (by surgery) before the serum is applied.

Any other condition can be treated, including blood loss, malnutrition, heatstroke/hypothermia, diseases, toxic buildup, even other drug addictions – in many cases you do not want to treat these conditions with the serum, unless they would lead to certain death. Do not apply the serum unless absolutely certain it will heal the correct condition.


Many crippling conditions can only be cured by this item. It should thus be used wisely; most missing limbs and failed organs can be replaced with either artificial or harvested parts, while a demented brain can not. The serum should be saved for situations where all other treatments fail, are inadequate, or when the pawn would certainly die if untreated such as an infection or disease about to become fatal.

Do not expect to find more than a handful of these serums during a playthrough, if even that many.

  • Great for colonists with brain damage, dementia and frailty as they can be quite crippling and there are only two other ways to heal these chronic ailments and both come with significant downsides. They are:
    • Killing the pawn and then applying a Resurrector mech serum, which is another very rare item that can cause adverse side-effects including permenant psychosis (which ironically, requires a healer mech serum to treat).
    • Luciferium, which will cause immediate hard dependence on the drug and which, while also providing a significant number of other stat buffs, is very costly in the long run and potentially fatal if supply is disrupted.
  • Repair shattered spines or pelvises to allow colonists to function again (the former can however also be fixed with a bionic spine).
  • Immediately end a colonist's catatonic break at quite a cost. Do so when the colonist is vital to your colony's operations -- this should be a very rare occasion.
  • Prevent resurrection psychosis from taking over your resurrected colonist. Do note that resurrection psychosis is not revealed until it reaches its second stage, but will still be cured by using a Healer mech serum if used before it is discovered.
  • This is the only option to fix certain Social penalties in the base game, such as the Disfigured debuff from a missing nose.

Organs that occur in pairs (kidneys, eyes, ears) will always be healed in pairs (e.g. the serum would cure a cataract in both eyes, not just one). Replacements however occur individually.

Exclusive conditions

The following injuries and health conditions can either only be treated by healer mech serum or by either serum or luciferium. This does not include conditions that can be fixed by replacement by an artificial body part or harvested replacement.

Condition Luciferium curable
Dementia Check.png
Alzheimer's Check.png
Frail Check.png
Shattered Pelvis  Ex.png
Destroyed Nose Content from Rimworld core game only Ex.png
Torso Scars Check.png
Brain Scars Check.png
Neck Scars Check.png
Trauma savant Check.png

Order of conditions treated

The serum will heal conditions according to severity, in this order:

  1. Missing limbs
    • Legs > shoulders/arms
  2. Toxic buildup
  3. Diseases, in order of severity
  4. Frail
  5. Alzheimer's
  6. Dementia
  7. Scars on the brain
  8. Missing organs
    • Lungs > kidneys
  9. Drug addiction
  10. Scars on other parts
  11. Trauma Savant


  • The game does not necessarily rank the severity of conditions in the same way the player would. This can lead to the "wrong" condition being healed, since the serum only heals one condition. As an example, a "major infection (developed immunity)" is rated worse by the game than "Alzheimer's (minor)", even though the latter is normally incurable, while the former condition is not even a practical problem. Make sure to check the health condition of the pawn carefully before administering the serum.

Version history

It was added in Beta 18. At that time it could treat injuries and ailments, but could not treat some conditions, notably diseases.

In Beta 19/1.0 its function was expanded such that it can now treat nearly all health conditions.