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Medical material
Medical Gel Sac inventory icon in Subnautica 2.

Medical Gel Sac Guide

Inventory icon

Acidic Raion supplies two different materials: acid in its chambers and medical gel in its central plug. The harvest order matters because disturbing the pressurized center first can release acid.

Quick answer: Medical Gel Sac comes from the Acidic Raion central plug. Remove the surrounding chambers before disturbing the center. Combine 1 Medical Gel Sac with 1 Fiber at the Fabricator for an Enhanced First Aid Kit.

Reviewed .

Recipe version: Early Access PC build 128456.

Subnautica 2 starter supplies used for medical crafting and first-aid planning.
Primary use

Enhanced First Aid Kit crafting and medical supply preparation.

Route and unlock plan

Use the Acidic Raion cave on the starter Lifepod route.

First Hour guide
Step 1

Find Acidic Raion

The linked Lifepod cave marker connects this pickup with the early acid-material route.

Step 2

Remove the surrounding chambers

Cut the chambers away before disturbing the pressurized central plug.

Step 3

Collect the central gel

Medical Gel Sac is the gel material from the center.

Step 4

Craft an enhanced kit

Use 1 Medical Gel Sac with 1 Fiber at the Fabricator.

Player decisions

Question Status Rule
Harvest order Chambers before center Removing the center first risks releasing acid.
Medical recipe Enhanced First Aid Kit 1 Medical Gel Sac + 1 Fiber.
Basic kit option Fiber only The Fabricator Basic First Aid Kit recipe does not require Medical Gel Sac.

Useful links

Questions people ask

Where do I find Medical Gel Sac?

Collect it from the Acidic Raion central plug after removing the surrounding chambers.

What is Medical Gel Sac used for?

Combine 1 with 1 Fiber for an Enhanced First Aid Kit at the Fabricator.

Is Medical Gel Sac the same as Acidic Raion Pouch?

No. The pouches are acid supplies from the chambers; the central gel serves the medical chain.

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