Mass Effect 3 Citadel Chemical Treatment Guide: Start, Items, Choices
If you’re working through Mass Effect 3’s Citadel side content, the Chemical Treatment task is one of the smaller missions that still matters for story flow and your overall run. This guide-style breakdown covers how to start the job, where to locate the required items, how the combat sequences play out, and what you need to do to pick the correct options during your playthrough.
Checklists
Need to jump straight to a specific section? Here are the main parts this guide covers:
- Mission Stats
- Meet the Doctors
- Find the Chemical Treatment
- Missed it?
- Deliver the Chemical Treatment
- Missed it?
Mission Stats
Video Guide
Mission Rewards
- Mission Experience: 30 XP
- Reputation: +5
- Mission Credits: 1,000
Meet the Doctors
- Prerequisite: Complete “Priority: The Citadel 2”
- Location: Serpent Nebula – Widow – Citadel – Huerta Memorial Hospital – Lab Services
To start this Side Mission, you’ll want to progress past “Priority: The Citadel 2.” After that, head to Huerta Memorial Hospital and move into the western Lab Services area. Specifically, look for the room on the left side of the security scanner hallways. Inside, you’ll find doctors focused on a patient suffering from chemical burns.
Find the Chemical Treatment
- Prerequisite: Complete “Priority: Geth Dreadnought”
- Location: Silean Nebula – Kypladon – Cyone
The quest item is located on Cyone, during N7: Fuel Reactors. That mission becomes available only after you finish Priority: Geth Dreadnought.
Starting from the beginning of the area, face the Turian Nyrek, then take the left-hand route. Keep going until you reach a balcony. The item will be placed on a crate beside the railing, positioned next to a ladder that leads down into the radioactive section.
If you somehow missed the Failed Medi-Gel Experiment during N7: Fuel Reactors, you still have an alternative. Return to the Citadel and check Spectre Requisitions. There you can purchase “Chemical Burn Treatments” for 1,000 credits, and this purchase will also satisfy the requirement for this quest.
Deliver the Chemical Treatment
With the item in your inventory, go back to the Huerta Memorial Hospital. Return to the same western Lab Services room where the doctors were investigating the chemical burn case, and hand over the treatment to resolve the situation.
Looking for more help with Mass Effect 3? The guide lists additional pages such as:
- Legendary Edition Changes
- How-To Guides
- Key Choices and Consequences
- Romance Guide
- Walkthrough
- Side Missions
Up Next: Citadel: GX12 Thermal Pipe
Top Guide Sections
- Legendary Edition Changes
- Game Basics
- Tips and Tricks
- How-To Guides


